Not sure what's going on with my guppy tank.
First my beloved Picasso died a couple of weeks ago, then another one a couple of days ago, then another one today
i checked the water,
nitrates 10
nitrite 0
hardness hard 150
chlorine 0
alkalinity ideal at 120
PH neutral at 7.2
water temp good, heated tank, tropical range.
the two remaining look good, although one looks a little chubby, the cory cat in there looks good too.
no observed aggressions.
now i know i said i wanted to convert this tank to betta tank someday, but i didn't want my guppies to die off so soon
any thoughts?