What would you do with this water?

We recently moved west about an inch on the attached map. From the red zone to the green zone. After failing with my usual routine, everything almost died, I got wiser about my new water. It's 24 dGH and 16 dKH per testing, and per the technical water report:

83 mg/L Calcium
50 mg/L Magnesium

And, not a part of GH I know:

21 mg/L Sodium - Is this bad?

So that's a 1.7:1 ratio of Ca:Mg. I'm presently reconstituting 100% RO water from scratch but I'd like to use some tapwater in the process, I think. To get a better ratio I'd have to ADD Ca to what is already a hard water problem.

I tried the Barr GH Builder/Booster with 100% RO and hygrophila difformis stalled completely. That big gob of potassium is suspect, but I can't prove it. Since I depend on h. difformis for nitrate control with goldfish, I'm looking for a sure deal in terms of plant growth.

Tank is 90 gallon, 3WPG, CO2 injected with all the ferts.

Thanks,

TW

 

Re: What would you do with this water?

Yeah, I tried a mixture of tap/RO and the plants did not respond well to that either. I think it's the Ca:Mg ratio, which would still be wrong even with a mix.

I bought a 44 gallon heavy duty plastic trash container and use that to collect the RO water in. Filled it 5 gallons at a time and marked it at 35 gallons, then calculated the number of gallons drained from the aquarium per inch, and marked the tank at 35 gallons down. (Actual water volume is about 70-75 gallons) After all was done, I had about a half gallon left over in the trash container, so close enough.

Since it looks like I'm stuck with this, I'm looking for ways to minimize water changes, which means I need to get rid of nitrates better. I just ordered some duckweed and water hyacinth that I'll add to the sump.

TW