HOB to Canister - Mini-Cycle?
Tonight I switched my 20L from HOB filtration to a canister.
The HOB's are a penguin 150 (just to move water around really,) and an AC70. I'm just curious if there anyone that can input on what kind of parameter changes I can expect. I've heard a lot of folks say that most of the bio filtration is done in the substrate, and there are those that say the opposite. I've left the penguin running with a sponge from the AC in it, the other sponge from the AC was incorporated into the canister, as well as the ceramic rings from the top of the AC.
Ironically enough, after I had done this, a guppy gave birth. So now I have 20+ fry swimming around and I'm hoping that any cycle that I see will be small enough that the fry won't die off.