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Old 08/18/2018, 07:02 AM   #1651
sirichok
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Nice work! Sounds like your are on the way. Just let the changes take some time, not lowering the PO4 or NO3 too fast. I find it easier to level out/keep values stable if the lowering has been slow.



I would aim for 5ppm NO3. If you come close to 0 you might get cyanobacteria, so I like some margin.



Great to get an update. Looking forward to the progress.



/ David


What is the value of Po4 in your tank ? What is your preferred target ?


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Old 08/18/2018, 07:32 AM   #1652
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What is the value of Po4 in your tank ? What is your preferred target ?


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We try to keep it between 0,02 and 0,08 ppm. But as long as it's stable it might be okey with a little higher values too I think.


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Old 08/19/2018, 07:47 PM   #1653
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50,000 litre tank in a boutique hotel (Bangkok , Thailand)

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We try to keep it between 0,02 and 0,08 ppm. But as long as it's stable it might be okey with a little higher values too I think.


Thanks for the information . I noticed two effects regarding the addition of Lacl3 . First I notice a drop in KH so I assume that Lacl3 bind with phosphate as well as carbonate . Secondly I notice that raising magnesium is a lot harder and take more amount of magnesium chloride . Do you experience any effect on raising magnesium while dosing Lanthanum chloride ?

Best regards


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Old 08/20/2018, 12:24 AM   #1654
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Thanks for the information . I noticed two effects regarding the addition of Lacl3 . First I notice a drop in KH so I assume that Lacl3 bind with phosphate as well as carbonate . Secondly I notice that raising magnesium is a lot harder and take more amount of magnesium chloride . Do you experience any effect on raising magnesium while dosing Lanthanum chloride ?

Best regards


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Did a search and you are right. Sorry, I didn't know!

I had to look through our notes from when we have used LaCl. Sometimes the KH drops a little, sometimes it doesn't(at least not much enough for us to see). Perhaps our doses have been very small and the KH drop is small too.

About magnesium and LaCl I don't know. I know I had trouble raising the Mg when only meassured with Salifert, but that was probably because the test wasn't that good. Nowdays I rely on the ICP tests for Mg.

Not the best answers this time, sorry for that


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Old 08/25/2018, 11:34 PM   #1655
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Did a search and you are right. Sorry, I didn't know!



I had to look through our notes from when we have used LaCl. Sometimes the KH drops a little, sometimes it doesn't(at least not much enough for us to see). Perhaps our doses have been very small and the KH drop is small too.



About magnesium and LaCl I don't know. I know I had trouble raising the Mg when only meassured with Salifert, but that was probably because the test wasn't that good. Nowdays I rely on the ICP tests for Mg.



Not the best answers this time, sorry for that


Thanks for your advise .

Now the phosphate level is down to 0.05 ppm . KH is at 7.8 DKH but still struggling with No3 at 25 ppm .




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Old 08/27/2018, 12:05 PM   #1656
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Thanks for your advise .

Now the phosphate level is down to 0.05 ppm . KH is at 7.8 DKH but still struggling with No3 at 25 ppm .




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Great job!! Hope you can find a good way to keep it stable around 0,05ppm.
Yes, the nitrate usually take some time to lower. Just be careful if you use a carbon source, not to overdose and not to get too low phosphate. Adding a carbon source often lower both NO3 and PO4, but if PO4 deplete the NO3 won't go down(and corals might be a bit unhappy with zero PO4). So make sure to monitor the nutrients so that doesn't happen. Ive also seen Cyanobacteria start to grown when PO4 was depleted.

Looking forward to updates on the tank!

/ David


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Old 08/29/2018, 11:56 PM   #1657
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Feeding time.




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Old 08/30/2018, 06:00 AM   #1658
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In the top left of the pic; what kind of fish is that? Some kind of parrotfish?


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Old 08/31/2018, 08:29 AM   #1659
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I love that trigger... looks pretty big!


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Old 08/31/2018, 08:31 AM   #1660
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In the top left of the pic; what kind of fish is that? Some kind of parrotfish?


Yes a parrot fish .


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Old 09/02/2018, 06:47 PM   #1661
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Beautiful parrot. Never seen that one before


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Old 09/04/2018, 07:13 AM   #1662
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Impressive construction and built.
Seems like no matter how big you build, you always get to the same problems for water parameters.

A professional photographer would make the tank look even more amazing.

Next time in Bangkok, I sure will come to the Boutique Hotel.


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Old 09/08/2018, 05:17 PM   #1663
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Impressive construction and built.
Seems like no matter how big you build, you always get to the same problems for water parameters.

A professional photographer would make the tank look even more amazing.

Next time in Bangkok, I sure will come to the Boutique Hotel.


Thanks for your advise . Hope to see you in Bangkok soon .


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Old 09/08/2018, 10:28 PM   #1664
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I wonder when you brought a professional to photograph your hotel, didn't he take any photos of your tank?


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Old 09/09/2018, 07:09 AM   #1665
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Gorgeous tank!


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Old 09/09/2018, 08:22 AM   #1666
sirichok
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I wonder when you brought a professional to photograph your hotel, didn't he take any photos of your tank?


Not really because the aquarium was still at infancy stage . He only took a few photos of lifeless tank . Now the aquarium has matured considerably . I will post photos soon .

Water parameters are getting better .

Temp - average 25.5 c
PH - 8.20
KH -8.5
Po4 - 0.02
No3 - 10 ppm

My next target is for no3 to go down to around 2 ppm .


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Old 09/09/2018, 05:38 PM   #1667
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Feeding time.




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The clams didnt make it?


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Old 09/10/2018, 06:15 AM   #1668
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The clams didnt make it?
Were they ever alive? I don't remember that. But with triggers [and angels] they would never survive anyway.


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Old 09/10/2018, 11:43 PM   #1669
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I also wonder with that fish selection if sirichok plan, is for a fish only tank? Not only clams but all the soft corals and lps, I show in some photos, should have few chances to survive with those fishes, despite the massive dimensions of the tank .


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Old 09/11/2018, 12:11 AM   #1670
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I also wonder with that fish selection if sirichok plan, is for a fish only tank? Not only clams but all the soft corals and lps, I show in some photos, should have few chances to survive with those fishes, despite the massive dimensions of the tank .


All the soft corals have survived for 6 months with only occasional nipping because of the dimensions of the tank . I agreed that this would not be possible on smaller tank . The clams perished not because of the puffer but because we had problem of ammonia spike from new tank syndrome and overfeeding . We also lost a few fish in the process .

Also the undulate trigger fish with bad reputation behaved extremely well and did not bother any other fish but on the contary was chased occasionally by chromis fish due to territorial issue .

From my experience having both small and large aquarium , fish behave differently towards their own species and also towards corals .

Once I get my parameters stable , I will start introducing sps corals . At the moment po4 is around 0.02-0.08 and no3 is around 10 ppm .

I will introduce yellow coloured sps and try to maintain the colour for a few months and see what happen .


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Old 09/11/2018, 01:29 AM   #1671
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All the soft corals have survived for 6 months with only occasional nipping because of the dimensions of the tank . I agreed that this would not be possible on smaller tank . The clams perished not because of the puffer but because we had problem of ammonia spike from new tank syndrome and overfeeding . We also lost a few fish in the process .

Also the undulate trigger fish with bad reputation behaved extremely well and did not bother any other fish but on the contary was chased occasionally by chromis fish due to territorial issue .

From my experience having both small and large aquarium , fish behave differently towards their own species and also towards corals .

Once I get my parameters stable , I will start introducing sps corals . At the moment po4 is around 0.02-0.08 and no3 is around 10 ppm .

I will introduce yellow coloured sps and try to maintain the colour for a few months and see what happen .


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Like in the sea, corals survive all the attacks , impressive :-)


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Old 09/14/2018, 01:07 PM   #1672
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Be very very careful feeding Caulerpa. If a fragment gets stuck between the rocks you might end up with a pest that is nearly impossible to eradicate, especially in your huge reef. I would strongly consider feeding other marine plant based foods instead. When I visit Thailand again I will definitely include your hotel in the trip! Keep up the good work!


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Old 09/17/2018, 06:32 AM   #1673
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Be very very careful feeding Caulerpa. If a fragment gets stuck between the rocks you might end up with a pest that is nearly impossible to eradicate, especially in your huge reef. I would strongly consider feeding other marine plant based foods instead. When I visit Thailand again I will definitely include your hotel in the trip! Keep up the good work!
It is certainly a concern... but with all those tangs constantly foraging, I don't think the caulerpa would ever establish, let alone go uneaten for more than 1 minute.


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Old 09/17/2018, 07:30 AM   #1674
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It is certainly a concern... but with all those tangs constantly foraging, I don't think the caulerpa would ever establish, let alone go uneaten for more than 1 minute.
I would not be too sure about that. If it gets stuck between corals or in areas where the fish normaly don't swim, it might be very well possible.

The number of grazers definitely decreases the risk but I would be cautious.


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Old 09/19/2018, 10:00 PM   #1675
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Yes but if they only grow is cracks/crevices, then they would not pose a concern.


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