Help... I have a 7 gal
and 29 gal
freshwater tank and I'd like to keep fish alive in there. I have been keeping guppies with some success in the small tank; inherited the big one and had to start over with cycling it. It's cycled (but still high in nitrates...).I've got a few lamplight tetras and black phantoms in that one, also an upside down catfish and small golden killifish. I am doing 20% water changes every 3 days hoping to lower the nitrates.
Tell me if that's wrong. (One of the new phantoms died; others seem OK after a week). Fake plants and small river gravel, one live philodendron (I find those stay healthy for a few weeks and I've got plenty to replenish them with).
MY QUESTION: What kind of fish will thrive in very soft, alkaline water? I have a water softener and a reverse osmosis systemt. The water softener is stupidly hooked up to the whole system (including outdoor faucets that I water my garden with!). There is one outdoor faucet that is only softened, not RO
.... So, I have a choice between these two sources:
/soft water: pH 8.0 or 8.2 , less than 1 GH
Outside faucet (softened): pH 7.5, 9.5 GH
, 5.5 KH
Are there interesting fish can I keep (either colorful or interesting or preferably both!) can I keep with such unnatural water parameters? Or is there a way I can safely harden the water? It is not easy to use the bypass valve for the water softener... hard to press and seems like it could break. And then I'll forget to turn it back on... So I'd rather not.
Ideas??? I'd love to have a tank full of fancy guppies, frankly but there are no pretty ones at pet shops around here. Fugly yellow ones, and black/white that are supposed to be "blue deltas"... I'd love Endlers but I think they like hard water. Any cichlids that will like my water? Anything at all???