• High Ca - low KН

  • Andrea9320

I measured Ca 600, KH 4. Salt Red Sea Coral Pro. Aquarium 1000L. I do 50L water changes every week. I raised KH to 6 in two days with baking soda. What should I do with Ca? How to lower it? Tests SERA Ca and KH, Salifert Ca and KH show almost the same results.

James5103

Add soda until the KH is 11-12. Keep it like this for a week; the calcium will drop. Once it reaches 450, stop adding soda. After a week, it will stabilize at KH 9, Ca 380. Then switch to balling, and you'll forget all your problems.

Melissa

Ok! I will try.

Jeremy8404

If it's not too much trouble, please measure Ca and K in the freshly prepared water. I'm curious to see what the tests will show!

Chad9037

What is the situation with RO4? What did the testing show?

Christopher4108

In freshly prepared water after osmosis with Red Sea Coral Pro salt, Ca showed 480, I didn't measure KH, but I measured KH in the tap water at 16. The TETRA test showed normal levels, and I am currently using TM anti-phosphate.

Joseph

Some strange imbalance. Is nothing being dosed in the aquarium?

Joshua

I added Red Sea Ca+3. But just a little bit. Once a week. The bottle says 5ml for 120l, I added 10ml for 1000l.

Natasha7622

and JBL 1.2.3

Joseph591

I read that many people have the same problem using this Red Sea Coral Pro salt. And no one can figure it out either. It feels like calcium is accumulating.

Alicia5489

In fact, the big problem is that the KH is dropping, not that calcium is accumulating. Due to low KH, fluctuations and drops in pH are possible, and that's not good.

Darlene4238

Yesterday, I measured the pH in freshly prepared water 11.

Courtney4094

If the Po level is high for the reef—over 0.2—phosphorus binds calcium ions, and they cannot extract it at the levels they need. Calcium accumulates. However, Kd can still collapse. An excess of Po4 is the result of many factors; it can be due to organic accumulation (overfeeding), overcrowding, insufficient water replacement, an unacceptable amount of detritus accumulation, poor pH control...