Switching to RO/DI water. Tips please.
Well I finally dished out some cash for a RO/DI unit since my tap water is off the charts with nitrates. I have some Seachem Equilibrium and Seachem Alkaline Buffer and plan to pre-dose for 5dh and 5dkh, not sure what pH that will end up, or if this hardness is good for my fish and shrimp. My current water is spring water from the store. Tank water is 7.6ph with Co2 off, 7ph with co2 at 30ppm.
I do not know the hardness of my water as my hardness tests I have are out of date as well as the ones on the shelves in my local stores (which is pathetic), I didn't bother with getting one online due to the chance those are out of date as well.
Here's my worry, I don't want to shock my shrimp/fish with a pH crash or large hardness change.
Question 1: What GH and KH should I aim at, should they be near the same? At what point am I risking a pH crash?
Question 2: How fast should I convert over to the new water? 10% water changes daily over two weeks or 30% every week like my normal water changes?
Current Tank info:
Inhabitants 60+ RCS, 1 female Clown pleco, 1 male honey DG.
Co2 injected 30ppm 7 hours a day.
PH is 7.6 without co2.
Phosphate .5-1ppm from mostly from food and dosed if it drops too low.
Iron is dosed.
Magnesium is very very low due to spring water, one of the reasons for picking Equilibrium in RO water.
Nitrate 5-15ppm (has to be dosed sometimes)
Micro's are dosed.
Lighting Finnex planted+ set for 8 hours at 60% brightness, and added some 460nm and 660nm LED's on dim.