Originally Posted by
spanko
http:///forum/post/3079299
Hello Matty.
IMO you have cycled your tank. This means that you have established a bed of nitrifying bacteria that will convert the current bio load from ammonia to nitrite and from nitrite to nitrate. Our tanks unless designed so do not house enough of the denitrifying bacteria in them to convert the nitrates into nitrogen gas so we must remove them. We do this by changing out a percentage of the water for clean water on some regular schedule.
If this tank were mine I would do the following;
1. Do a minimum of 10% of the volume of water change out. If you have a 37 gallon tank and with the displacement of rock and sand you probably only have 30 gallons of water. So 3 gallons removed, 3 gallons of new saltwater added. I would also add here that the water should not be tap water mixed with salt, instead RODI or distilled water mixed with salt.
2. After the water change I would go out and get 3 of each of the following; Nassarius snails, Cerith snails, and turbo or Nerite snails. Add them to the tank and let it go for a week or two. Testing every other day or so to see how the tank is reactingstabilizing.
3. I would also get on a regular water change schedule of 10% per week. At water change time us a turkey baster, new one not the one from the kitchen, to gently blow on the rock work to dislodge any accumulated detritus and suspend it in the water column. Then do the water change which will remove some of this detritus and help your filter also remove some of it. At water change time it is also a good time to clean out and replace any filter materials like flosses or pads. Clean the glass. Etc. Get in a rhythm here for your weekly maintenance.
4. After a week or two go ahead and add some more critters. Slowly here as each time you add something you are adding a bioload and your bacteria culture needs to increase to handle it. So one fish at a time, or two clowns if you want a pair or whichever way you are going to go. After each addition wait a week or better two to see how your tank does handling the bioload increase. You do this by testing for nitrites and nitrates. If you are doing it slowly enough you will not see any nitrites on your test but you will see some increase in nitrate which can again be controlled by the water changes.
Just some suggestions hope they help you decide on a course for your tank. And we always need pictures of the progress.
Spanko - Awesome advise. Thanks a ton for the lengthy thread here. Much appreciated man!
Since my tank is filled with tap water, by adding 3 gallons of ro/di water instead, will this cause any problems?
Thanks again,
Matt