Let's Get It On! SPS tissue recession

[CoryDude]

I found that alk is alway fall very fast even with Kalk dosing as water replacement. I have to dose alk to bring it up to normal and PH fall low at night and goes high in the day time. What I did was dose soda ash at night to bring alk and ph up. I also found dosing potassium is another key from bring the coral back to health.

Hmm, I've always had a problem with alk also, but I had that problem before the Hiatt and after the Hiatt.

I am sure there are other elements are missing in the water. I do some water change to replace missing element, but keep alk,cal,mg,ph,potassium high and stable is the key. Feeding coral is key too (ie add some nutrient in the water)

With the NO3 reactor, I only change about 10% of the water per month, and that is for mineral replacement also. I agree that this is very important on low nutrient systems.

Adding other type of SPS next week.

What are you adding? Be sure to snap a picture for us.

Right now the key is Potassium....(N,P,K) these three elements are key to growth. Need to know how to control them just like alk,cal,mg,ph

So are you saying that Nitrogen, Phoshorus, and Potassium are the keys to growth for a ULNS? I never knew that nitrogen could be important. I think you are right that controlling them is the key, because it seems there might be a fine line between being deficiencies and too much.