My ph is 7.6. temp stays at 76-80 degrees F not sure about the rest.I do a quarter to 50 percent water changes once a week or once every 2 weeks. I have 2 black skirt tetras 4 briggs, one olive nerite, 1 pleco, and a few ramshorns. before the briggs came (a few weeks ago) I added one tbsp of aquarium salt per 5 gallons. I don't add the salt anymore as I have read that briggs do not like any salt but then read that they can handle it. I just thought I would stay on the safe side. lol don't want any loses. I also treat the water for chlorine and hard metals. There is a woman named Wilma Duncan that has bred olive nerites with good success. I emailed her but never got a response. I will try her again though. I really hope we can find more info or others that have bred them with success. I will keep searching!