i've recently set up my first el (10-gal) and the initial fish were fine; bought another, and he turned out to be an ich carrier. it spread; everybody got it, with the spots, lethargic, scratching themselves on things. i researched methylene blue and malachite green; both appear to be plant killers, so they were out. i'd read that an elevated temp would take care of it, so i raised the temp to about 80F deg and left it there for a week or so, then dropped it back to 75-76 deg. the spots are gone, and the fish (platies) are vigorous and look really healthy

. i'd wanted to raise it higher, but 80 deg was about all my little heater could do. i'd been skeptical about how effective it would be, but i'm a believer now

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