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Old 02/06/2018, 12:50 AM   #1
fishkeeprian
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Egg crate under rock

Do I really need egg create under my rock structures if it is stable on the glass bottom?

I will be getting a Coris Wrasse in the near future and was worried about sharp edges and corners on the egg crate when the wrasse decides to take a nose dive into the sand.

Any advice?

Thank you.


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Old 02/06/2018, 04:42 AM   #2
mcgyvr
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No you absolutely do not need it..
It serves no real purpose at all..


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Old 02/06/2018, 04:49 AM   #3
RobZilla04
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^ Yup - I don't have any under mine. No issues at all.


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Old 02/06/2018, 05:40 AM   #4
ReefkeeperZ
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Ive never used it.


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Old 02/06/2018, 06:19 AM   #5
billdogg
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I used it on my Eel's tank just to protect the bottom from rockfalls, but at nearly 4', he could easily move even the larger rocks in the system. I ended up having rock only on the bottom - nothing stacked at all.

For all my other tanks over the years I've never bothered with it. Many swear by it, but at least IMO, if you build your structures soundly there really is not reason for it.


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Old 02/06/2018, 08:11 AM   #6
RockOn681
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I use PVC rings I cut to fit under points of the rock. It takes up less space then the eggcrate and if you really want the rock to sit a certain way you can cut it thinner or thicker.


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Old 02/06/2018, 03:35 PM   #7
Deep Reef
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Donít use it. I did on my last tank and had issues with detritus build up and high nitrate. My new tank I went with abs plastic. Some folks use star board available in some Home Depot. Abs is used by quit a few builders in their composite tank bottoms


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Old 02/07/2018, 04:02 AM   #8
oldhead
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Quote:
Originally Posted by RockOn681 View Post
I use PVC rings I cut to fit under points of the rock. It takes up less space then the eggcrate and if you really want the rock to sit a certain way you can cut it thinner or thicker.
I did this on my first tank, My current tank has the rock on the glass.


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Old 02/07/2018, 09:34 AM   #9
Drblakjak55
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Never used egg crate. I built the base with those two foot long, two inch diameter coral branch pieces from Florida. The rocks sit nicely on this frame. Love my Coris


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Old 02/07/2018, 09:17 PM   #10
rfgonzo
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I've used eggcrate and also not used it. No difference IMO as far as health of reef tank but it did save my a$$ one time when I was aquascaping and dropped a 40 lb rock.


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Old 02/07/2018, 09:34 PM   #11
avery155
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I like to use it just because it seems to give the rock points something to bite into, may not be a problem after you add sand but helps rock from sliding around when starting to aquascpe.


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Old 02/08/2018, 07:22 PM   #12
rocsec1
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I didn’t on the first. On my current tank I used it. I have two columns of rock from the bottom to the top of the tank,a 4 foot 120. I just wanted some extra anchoring for the columns.


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Old 02/09/2018, 08:24 PM   #13
foreverreef
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I use it in my big tank. More for my own good. Trying to re-aquascape a 42" deep tank is tough at times. With the egg crate it seems to hold the rock structure better for me. In my smaller tank where I can reach the bottom.of the tank I do not have egg crate however. Either way seems to work just as well. I do find myself working with the rocks iny small tank more than the big tank...not sure if it's the egg crate or it just being easier in the smaller tank.


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Old 02/10/2018, 08:18 AM   #14
Bent
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I didn’t put it on the bottom of my old 55g.

The bottom broke after 8 months. Water everywhere.


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Old 02/12/2018, 07:36 AM   #15
sirclintler
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I used egg crate 2 yrs ago, now wanting to go bb, wish I would have never put it in


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Old 02/12/2018, 10:10 AM   #16
hearttx
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I had it in my 1st tank and not in my 2nd. I notice no difference and I am not worried about falling rock.


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Old 02/12/2018, 08:00 PM   #17
thegrun
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I use it on all my tanks (with sand) to help anchor the rocks in place. I suppose it helps protect the bottom of the tank but the main reason I use it is to keep rocks from moving around due to the pressure exerted from shifting sand and the rocks piled on top of the base rocks. I've taken down two tanks that were over 5 years old and the sand was just as clean between the egg crate as above it. I don't buy into the "it traps detritus" myth at all.


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Old 02/12/2018, 10:42 PM   #18
mav3rick478
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I use a piece of acrylic and it doesn't bother my wrasse at all.

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Old 02/16/2018, 06:16 AM   #19
Mknuwet
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I’ve used both eggcrate and pvc. Neither is needed


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Old 02/16/2018, 10:20 AM   #20
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Careful if you do they sharp!!


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