Originally Posted by dennis
I did not mean to "correct" you but it was throwing me for a loop. Math and chemistry are not my best subjects so I did not realize how much a 15ml dose adds
My bad. Good news is that tetras, nerites and pygmy cories can take 3.75ppm gluteraldehyde. Riccia is not to happy and BBA may be a bit grumpy but the plants and fauna are fine.
How are you adding the glutaraldehyde to the tank? Maybe if you had enough riccia, you could do a few experiments.
Have thse following groups of riccia:
2) Tied to a rock closest to the area where you dose your glutaraldehyde
3) 6 inches away from rock #2
4) 6 inches away from rock #3...and so on so forth.
This way, we can see if the initial "shocking" concentration of glutaraldehyde has anything to do with its death, or if the overall concentration of ~3.75ppm is enough to do it in. If we can figure out what's actually killing it, we might be able to find a good way to dose the glutaraldehyde. ie: Maybe mixing it with new water during a WC and adding it that way, or adding it as the water flows in from a python or something similar.