I have another question as well while we are on the subject. I tear off a peice about 1.5 x 1.5 and soak it in all of the vitamins and such. Then after it dries, I put it in the clip and into the tank. HOWEVER, can someone tell me how you get this stuff from just being a cloud in your tank? What I mean is my fish will pull and tug at this stuff on the clip and thus it breaks off into small peices and floats all over the tank. I have tried folding the peices, rolling, etc and have not found a good way to keep it from just ending up floating in peices in the tank. Got to be a better way.
Also, I paid $2.79 for the 12" x 12" sheets and there are 10 to a package. Not to bad I think....