that's interesting as I was battling the exact situation the last 12 day's as I started a second discus tank and 9 juvie in a 29 gallon tank was delieved too my door by a member of this forum, Roland Teves very healty beautiful fish in and thought by taking a seeded yr old sponge filter asi had 4 in the 90 with 2 canister and used a new brand of benterial flural my tank would be pretty much cycle fish must be very healthy as ammonia read with 24 hr's between 1 and 2 continued added the fural with large 75% water changes and ammonia kept re-climbing again for 4-5 day's then went threw the same for nitrated for day 5-10 but amazing enough the fish eat flawless acted 100% normal in fact I have at least 12 different types of food's and I admire the job and have too recommend POLAND TEVES job he did as they imitated Kenny discus too the tee, I assume too my good water changes and taking care I haven't lost any now for the last 2-3 tank has been completely cycled and amazingly have noticed a vast improvement in them coloring a bit if the juvies did start too show stress in anyway I was prepared too add a second sponge filter from the 75 gallon, as it still had 3 left with 2 canister's also the 29 gallon does have a emp 280, with bio wheel, and a bag of bio-max I curious too how long i'm going too be able too use the 29 gallon as the grow out tank before having too move them too larger and will start a new threat 4 replies,