Lime Scale Buildup in Pump ?

[Coleus]

I think you should dose MG to bring it up to 1350 and then try to adjust alk and calc? Do you have mangroves in your tank?

Also try different test kit to make sure

[globaldesigns]

Originally Posted by Coleus

I think you should dose MG to bring it up to 1350 and then try to adjust alk and calc? Do you have mangroves in your tank?

Also try different test kit to make sure

I agree with Coleus, Magnesium is really low, but so is your ALK (way too low). But as Coleus said, take care of your Mg first, then slowly adjust ALK over the next week or so.

Try to lower your calcium to 400-420 max, this should also help with your PH, which is fine, but should be closer (if not) 8.3

[DiverDude]

Originally Posted by Coleus

I think you should dose MG to bring it up to 1350 and then try to adjust alk and calc? Do you have mangroves in your tank?

I'm dosing Mg daily and don't seem to be catching up. No Mangroves.

[Coleus]

it does take a lots of Mg to bring your level to 1350. Use the reef calculator like this
http://reef.diesyst.com/flashcalc/flashcalc.html and see how much you need to dose to bring it to the desire level.

[KevinK]

Originally Posted by Coleus

it does take a lots of Mg to bring your level to 1350. Use the reef calculator like this
http://reef.diesyst.com/flashcalc/flashcalc.html and see how much you need to dose to bring it to the desire level.

talking about a lot,

I gust broth mine up from 1200 to 1400 and used 24 cups in total (epson and dead sea)

so use the calculator as mentioned

sometimes buying bulk is better, as well as instant ocean is very low in mag, I always have to ad ad about 400 GRams of mag at eachwater change, gust to bring up the new salt mix