Ummm, why am I figuring this wrong?Assuming the 2% is weight-by-volume: 2% w/v = 2 grams / 100 mL
30 mL in 60 gallons:
(2 grams / 100 mL) * 30 mL = 0.6 grams in 30 mL of the 2% solution.
If you add it to 60 gallons of water, 60 gallons * 3.78 L / gallon = 226.8 L
0.6 grams / 226.8 = 0.26 mg/L
You seem to be doing fine with the math Dennis Grumpy BBA is good and I am curious as to how your Riccia does. Allen said his was starting to come back but he hasn't posted in a while to give us an updateMath and chemistry are not my best subjects so I did not realize how much a 15ml dose adds
How are you adding the glutaraldehyde to the tank? Maybe if you had enough riccia, you could do a few experiments.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.
That could be a bit hard to control in a normal tank, but in my case I have 3 groups of riccia rocks. Group front left, group front right, group in the middle. Only the middle grouping was effected by the glut application and I assume this is due to eigher the highe rlight this group gets, or the fact that I apply the glut in the front right corner, so maybe that is where it settles first.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.
If we can atomic spectra on Excel, we might be able to figure out what it is....after that, I'm sure we'll be able to do something.I do add it basically into the flow from the filter. What is interesting is that the riccia at the far end should get the most concentrated amount of glut but is the stuff in the midle that is affected. So, either its a result of the higher light in the middle or the gluteraldehyde settles faster through the water than it mixes initially.
I don't think we'll ever find out how much is in excel, and understandably so.
Yep. I think it was mentioned somehwere in this thread already. It's a polycycloglutaracetal. Nothing more than a few cyclic rings added on to your conventional glutaraldehyde. I was just wondering if "reverse engineering" this structure would be in the legal realm.According to Seachem they use a different isomer of glutaraldehyde than the common form used in hospitals.