if its for snakeheads ,i would prefer canister esp if breeding as lots of channa have eggs that float to the surface ,a overflow would skim any eggs from the surface , with a canister if they breed you can just put some foam over the intake , if not breeding then up to you really , i just prefer canisters over sumps and hob ,but thats a personal choice
i would say get both. the wet dry will give you your bioligical filtration but you also need you mechanical filtrtion that will get the other bigger stuff that your wet;dry wont. well thats my point of view
i would say get both. the wet dry will give you your bioligical filtration but you also need you mechanical filtrtion that will get the other bigger stuff that your wet;dry wont. well thats my point of view