ESV 2part dosing questions???

[FishieBusiness]

I have recently started adding more LPS and SPS to my tank. I had been using IO reef crystal with good results. Per a recommendation from a friend I have changed to basic IO. As expected Alk. Ca. Mag. are starting to drop. I ordered the ESV 2part from BRS. Unfortunately on arrival I found that both the measuring cup had broken in shipping. I dont know how to move forward to get my numbers up. Watched many Utube vids today and I think I'm more confused now. Not sure how to start adding and I don't know how to measure it with those dam cups. All help is needed.

Temp. = 77-78
PH = 8.16-8.01 Day and Nite
Ca = 360
Mag = 1110
Salinity = 1.025-1.026

 

[Chris A.]

What’s your alkalinity at?

 

[Chris A.]

How much water volume?

 

[FishieBusiness]

Alk. is 9.5

Tank with sump is about 115G. Not sure how to deduct for the rock but it is about 50-60 lbs.

 

[Chris A.]

Here’s the calculator I use

Reef Chemistry Calculator

reef.diesyst.com

I’d add about 300 ml of the calcium since it’s really low
You’ll need a separate magnesium to raise it. The calcium part has some but won’t raise your levels without raising your calcium through the roof

 

[FishieBusiness]

Thx Chris I really appreciate all the help!