HCA: Hermit Crab Association

Hi everyone,
So this weekend I will be upgrading my E's from a 29-gal to hopefully a 40 gal, possibly larger depending on cost and things. I'll be moving the four PP's I'm adopting this weekend into the old 29-gal. I was just curious how much sub I'm going to need for the new tank. I've got about half a bag of playsand and one brick of EE left from updating the old tank. How much more would i need to get about 9 in of sub in the new tank? Thanks!


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If it's a 40 gal breeder I'm not sure, but I have a 40 gal tall I believe (~36 l x 12 d x 20 h) and 2 bags of sand and about 3/4 of a bag of Eco earth got me 6.5 inches of substrate. If that helps for reference.

Thanks!


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I have a 40 breeder and used 3 bags of playsand and 2 bricks of EE. That got me about 8", though it's probably settled a bit since then.