I mixed Red Sea Pro Coral reef salt into a 30 gallon trash can filled with RO water. I use two Maxi-Jet 900's for circulation and a 200 watt heater. After 24 hours of mixing I added some kalkwasser to raise the Ca level but noticed the alkalinity dropped to 6.0 dKH the next day. So I added Kent Marine Super-buffer which is suppose to raise alk. (contains bicarbonate). The next morning the water was white! I suppose the calcium reacted with the carbonate and formed crystals. Any opinions on what happened? I did not add the powder form of calcium hydroxide. I mixed the powder in a separate bucket and after 24 hours I used a little bit of the water on the top of the bucket.