GH, KH questions

[jstlstn]

Setting up a 90 to move my Saulosi into checked my GH and KH the are 7 and 9 respectively. I have never check GH and KH before always had a problem getting test kits. This is much the same on the rest of my tanks. all my tanks are Malawi tanks with a PH of 8 to 8.1 only one of my tanks have any type of buffering (holey rock in one). What is the best way to up my GH and KH? For the Saulosi tank I am guessing if I raise the GH and KH before I transfer the fish they will most likely be shocked so I should raise it slowly with them in it. Any suggestions are appreciated.

 

[chriscoli]

if you're in the DC area, our tap water has enough for them already. Just keep up with your water changes. If you feel they need a bit more, you might consider adding some epsom salt, marine salt, and baking soda. I think there are recipes out there that recommend about a teaspoon of each per 5 gallons of water, but I prefer doing mine per 20 gallons if I use any at all. Remember, if you do use salts, when you do a waterchange, only replace them based on the amount you changed, not the entire tank volume or you'll have the concentration creep up on you pretty quickly.