I would be careful using both as I think it might be a bit much for the flora. I was using it when I started iodine and ended up with a bowlful of green. Not sure what it was but it scared me silly so I quit the h2o2.
Can't say for sure, but it *could* be a bit of an overkill.
It was not in poop form, it was simply a bowlful of green stuff that looked like you could have yanked it right out of the sea - like kelp, long, fluffy healthy looking bright green - like the fake terrain you see in fish tanks. And you are probably right, but it was still very frightening to see, especialy knowing
IT CAME FROM WITHIN...