Urgent help needed!!!

[Genvid]

Dear fellow reefers, please help. Here is the situation: I have a 220-gallon reef tank. My parameters were: KH 8.2, Ca 480, Mg 1400, NO3 50, PO4 0.09, salinity 35, and pH 7.8. After reading several articles on nitrate removal, I decided to start dosing vinegar according to the specific chart provided on our site (50 ml daily). Today is the sixth day, and I noticed that three *Acropora* fragments have changed color. I immediately ran tests: KH 9.5, Ca 500, Mg 1410, NO3 60, PO4 0.08, salinity 35, and pH 7.6. I haven't been dosing anything for the past two weeks; the parameters seemed to have stabilized—neither rising nor falling. I perform a 20-gallon water change weekly using Modern Reef salt. My tank contains seven torch corals, ten small *Acropora* fragments, a couple of mushroom corals, and 5–6 other corals. Why did the alkalinity spike like that in just one day?

 

[Kooma]

Following along. If you started with 50ml that was likely too much, I dose 25ml of 10% acetic acid vinegar right now, I had it higher but was noticing cloudiness. Same water volume.

 

[Genvid]

 

[Kooma]

One thing to note is that this is 5% acetic acid, so look at what you bought and ensure yours is the same. I have 10% so 25ml is correct.

 

[Genvid]

Following along. If you started with 50ml that was likely too much, I dose 25ml of 10% acetic acid vinegar right now, I had it higher but was noticing cloudiness. Same water volume.

I dosed according to this table, and there was no clouding during dosing.

 

[Genvid]

One thing to note is that this is 5% acetic acid, so look at what you bought and ensure yours is the same. I have 10% so 25ml is correct.

 

[Genvid]

One thing to note is that this is 5% acetic acid, so look at what you bought and ensure yours is the same. I have 10% so 25ml is correct.