One of my tetras may be constipated (after food bloat lasts 18-24 hrs. then is gone, have not been able to observe the 'quality ' of excrement as I have yet to see it pass) I know that mushed peas are suggested as a starting point, and I have plenty, but they're canned. It seems that the standard recommendation is frozen, but i was wondering if canned could be detrimental to either the fish or water quality for some reason that I am not seeing. I assume they're fine to use as long as they haven't had salt added? I was hoping to use them tonight when I did the midnight feeding, but my grocery store was (somehow) out of the frozen ones w/o butter.