Hardscape and stagnant water - The Planted Tank Forum
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post #1 of 1 (permalink) Old 01-03-2017, 10:35 PM Thread Starter
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Hardscape and stagnant water

I am making a somewhat large hardscape element using Rocks and Apoxie Sculpt epoxy putty. It will be about 15*15*20cm in a 12G tank.

The element will be placed in one corner and will have a substrate & plants on top of it in a bowl. So 3 sides of it will be against the aquarium walls and floor. I want it to be right in the corner and not for example 1cm away from it so that fish might get behind it.

With epoxy putty I am able to make it match the aquarium corner shape quite precisely (max 0.5-1mm gap), but I am still worried about the stagnant water that might/will get behind the element. I am unable to locate filter input/output or any other vessels to pump air/water to that gap.

The aquarium hardscape will be in use hopefully for many years and I am unable to tinker with it without tearing the whole thing apart. Therefore I want to get it right the first time.

Should I:

A. Try making it as precise as possible and then seal the element from all 3 sides using silicone.

B. Try making it as precise and possible and leave it unsealed so there will be some very very minor water circulation.

Or are both of them a bad idea?

As far as I see, if I choose A, it is possible that water might still find a way between the element from some tiny hole, but the exchange with open water and sandwiched water is so minimal that there should be no issues? I think this compares to a small amount of substrate that is never stirred?

With option A, there is no risk of having sand or newborns stuck to that gap and no gap to clean.

Am I good to go with option A?
nikohak is offline  


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