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Dagon

Aquarium Advice Regular
Joined
May 7, 2017
Messages
68
Hello all

I'm about to set up a new tank and want to get some height in the substrate.

I'm assuming that i can use polystyrene under the gravel without any risk to the fish?

Any insight would be very welcome.

Thanks.
 
Hello all

I'm about to set up a new tank and want to get some height in the substrate.

I'm assuming that i can use polystyrene under the gravel without any risk to the fish?

Any insight would be very welcome.

Thanks.

You'de better be sure you have it down there for good, that thing would be a missile if it ever let go ;)
 
I’ve read about polystyrene and it’s buoyant nature.
You could try layers of egg crate (the white plastic material used for light diffusion and not the dark foam). There is also a type of drainage material (dark, plastic, crate like) that is often used for this purpose. The name of it slips my mind.
 
Humm. On reflection of course you are both right. I'd been thinking I'd weigh down any I used with stone and wood. But i think that way lies trouble.

Back to the drawing board.

Thanks for the comments/suggestion.
 
have you considered trying the under gravel filter grates there fairly cheap and each grate would give about 3/8 inch of height
 
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