I Hate Chemistry lol

[Abe]

okay, so I took a sample of my water to a LFS and here are the results using ELOS test kits:

PH 8.1
ALK 9.0
mag 1200 I could bump it up a bit
calcium 510 yes a bit high
but the main problem lies on the phosphate which I never use to test before it was at 1.0 yes I am not wrong it is at 1.0 so I bought an ELOS phosphate test kit and some GFO which I added under the drain line in the sump.

I have been testing it everyday since and it dropped a bit but still around 0.9 and 1.0 not a big change. I also bought new salt that I am going to use for my next water change. I am going to go from crystal reef to H2O.

I tested my RO water and my new mixed water with crestal reef and it shows almost zero for phosphate.

I was reading online that I might have to change the DSB and cook my rocks, in wich it will be hard to do right now as I will be deploying soon. so I need some guidance please, what shoud I do to lower my phosphate until I come back from my deployment. should I buy a phosban reactor and keep the GFO in it or should I buy a better skimmer as I have now a HOB Aqua C. or do you suggest some other alternative.thank you.