- Joined
- Jan 15, 2019
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- 15
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I have a 75 gallon tank and sump which has been up for over a year. Lots of rock in the sump and one big rock in tank. Tank bottom is coral tile. I have just a few soft corals and some gorgonians. Soft corals look good and are starting to spread. One bunch of white star polys which has never spread and looks pale. Its been in a year. I also have feather dusters, two haitian anemones and a flame scallop which are all doing fine for over 8 months. Fish population is light. 3 clowns, 2 cardinals, 1 harlequin bass. Few snails and hermits. I auto top off with 2 teaspoons of kalkwasser ( Kalk +2) per gallon. My pH is 8.2. Nitrates below .25 My Alkalinity however seem to stay at 12.5. Calcium at 300. I have been dosing vinegar at 10m twice a day, morning and evening. I also put a cup in with 10 gallons of top off water to activate leached out kalk. Top off uses about 1/2 to 3/4 gallon per day. I have good flow and turnover. 10 gallon water change weekly using Instant Ocean reef salt. Also after a year I am just starting to see some coraline algae growing in spots. Not a lot and I expected much more by this time. How can I safely get my alkalinity and calcium up and keep it there? I was under the impression the kalkwasser would do it. All water is IO/DI.