Good morning,
For 2 - 2.5 feet tank, u need at least 6-8 kg of soil. If you wants to scape ut new tank, you might need another 4 - 6 kg of soil. Its really depends on your scape. As for hang on filter, i'm currently using 2 GEX HOF for my 40cm x 25cm x 26cm feet tank (shrimp tank with alot of moss and shrimps). If you have alot of bioload, i will suggest you to get at least a high flow rate canister.
Well just my 2-cents, and enjoy your weekend.![]()
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