Yarnallicious

@Pepere @Tony s Sounds good. I think I'll hold off, would much rather conserve it for water changes or another tank. Thank you again!

Thank you so much for all of your inputs! I do have some fish in there already, a few clown loaches, some buenos aires tetras and tiger barbs who I've been feeding daily. My water today was at 0 Ammonia, 2-5ppm Nitrite, with 10-20ppm Nitrate. Went ahead and did a 70-75% water change. After doing so, I gave the established sponge a good couple squeezes, and dosed the tank with Stability. As for the filtration, I'm convinced that the FX6 alone definitely has the capability to turnover the water, but is not sufficient enough to provide flow throughout the whole tank, based on where the outlet is placed(on the end). I appreciate all of you who took the time to provide your suggestions, I tried looking around online for anyone who had similar experiences but maybe I just didn't use proper keywords. I admit I was conflicted from the start, beginning a Stability cycle when a means of bacteria was already present. Would it be safe to not continue the Stability's 7-day cycle as listed on the bottle, if at this point the sponge's bacteria has already propagated throughout the tank?

Most canisters do require the unit below the level of your tank, allowing the intake to be gravity fed into it.

Forgot to mention that I also have an FX6 and a 307 for filtration, I plan to swap the 307 for an FX4 as well. But both of the current canisters have been thoroughly cleaned, so there is no other bacteria than from the sponge filter.

Hello everyone, I just started up a 125 gallon tank and gave it a dose of Stability on the initial day of filling(3/28), also threw in a fine pore sponge filter from an established 55 gallon. I wanted to know if I still have to continue dosing the Stability, is the bacteria from the sponge filter enough to cycle the 125? Any tips or advice would be a great help, thank you! -Alex