Grrr-At one point and for several weeks, I had 0 readings across the board for ammonia, nitrite and nitrate. In the past few weeks I have had 20-40 nitrate readings with everything else at 0. I have a consistent ph of 7.8.
I have reread the fish forum nitrogen cycle page, perused some threads and haven't discovered my problem.
It is the 55 g in my signature. I have lots of rocks, 2 aqua tech 30/60 HOB filters that came with the tank, a seeded bag of biomax media floating in the back of one filter, 1 sponge filter added Sunday. I know the aqua tech filters are not that great and plan to replace them ( one at a time to save bacteria) with aquaclear 50s. (okay idea?)
I don't think I overfeed the cichlids -I feed 2xs a day and they always seem ravenous. If I note they are not, I skip that feeding. I do, however, try to keep a piece of romaine on a clip in the tank. I take it out as soon as it shows the first hint of brown, wilt or wet rot (my term, but I think you know what I mean). I net out scraps the fish have torn off but not eaten. I also net out other decaying/not flourishing plant matter. I have had major aggression issues in this tank so really hesitate to skip a whole day of feeding, but will skip a feeding session if they don't seem hungry at the first sight of food. I feed a mix of medium pellet, small pellet and flake - Ken's and Extreme.
There are a few water sprite and ? floating on top. The cichlids munch on the plants so , I don't have many. Cory gives me his overgrowth from his planted tanks so I always have some plants. I
had lots of duckweed which has been consumed by the fish.
The substrate is Sahara Sand with no visble food or waste remains.
There are two lights, both running the bulbs that came in them - daylight about 12 hrs a day.
The water is clear. I do not have an algae issue. There are 3 snails - I think - They haven't had a chance to multiply - I don't think.
Temp is 80 deg F.
My goal is weekly water changes but I am doing one every 2nd or 3rd day because of the nitrates. I usually do 25-30%. Twice I have done a 50%, refill to 3/4s, take to 50% again and fill.
I have swished the filters insertys in tank water. The first time (when I had gravel substrate) there was lots of gunk. The last time, there was only a trace amount.
Depending on the day, our tap ranges from 0 - 10 nitrates.
So...any ideas on what to do - other than more water changes - to lower nitrates? What plants could I add that I can float that they won't eat? I don't care if they eat some plants, it is good for digestion but I need to keep the nitrates down.
Thanks !
