RO help!!!

[Aaron]

3-4 KH is too high. Tom Barr (EI) and Edward (PPS) both agree KH is not necessary at all. CO2 alone cannot push pH below 5.5 or so. The plants and the fish will love you for it. Very few plants like hard water. Almost all of them LOVE soft water with GH of about 5-6 degrees. All adding KH to the equation does is make it harder for fertilizers and CO2 to dissolve into solution. Also, keeping the pH low assures any ammonia is converted to the much safer form of ammonium, which plants love.

If you really have to add some in shoot for 1-2 degrees at most.

Even shrimp will be fine. They get their calcium from food, not the water.

[150EH]

Maybe I'll just add one teaspoon of baking soda next time and that should get the kH down to 1.5 or so, the gH was 53 ppm/3 dgH, thanks for the info.

[DonkeyFish]

In case you're still insisting on the kH I've got Seachem buffer all over the place here. Be happy to send you some...

[150EH]

I'm just going to add a single teaspoon of baking soda for a while or until I make a on-line order somewhere, thanks for the offer.