Lowering high Alkalinity when mixing new batch of Instant Ocean

Greg P · Oct 19, 2019

I've used it to mix 120g of new water and can say the bucket levels were correct for my usage.

Can't say much about long-term useage

Rst · Oct 20, 2019

gregzz4 said:
I can't afford Red Sea Blue buckets here locally as they are almost 1*5 the cost of IO Regular buckets.
But, I'll say that this could be what you are looking for to solve your Alk issue.
And it may be a stable enough salt for your other needs too.

I wish I could use it regularly because of what it states on the buckets;

Another Test Post FR

This Tips & Tricks blog will provide you with great practical advice on how to ensure a consistent and perfect mix every time. Advice on how to ensure a consistent and perfect mix every time.

www.redseafish.com

Aquarium Type Salinity Alkalinity (dKH) Ca (mg/l) Mg (mg/l) K (mg/l) Dose
SPS Dominant 35 ppt 7.5-8.5 415 – 445 1240 – 1320 375 – 405 38.2 g/l
Ultra Low nutrient SPS 33 ppt 7-8 395 – 425 1180 – 1260 355 – 385 36.0 g/l
Marine Fish 30 ppt 6.5-7.5 355-385 1060 – 1140 320-350 32.8 g/l

Thanks, I will Red Sea check out the cost here in Canada.

Rst · Oct 21, 2019

I have now tried a test with a 5gal pail, mixing new Instant Ocean salt with 5gal of RO. Tested the salinity at 1.026, temp 75 and Alkalinity at 12.0. Goal is to drop alkalinity from 12.0 to 8.3. Then added 2.2ml of the same jug of 31.45% Muriatic acid used before mixed throughly. Result was disappointingly still at 12.0. So with a brand new jug of the same brand of acid, tried again, adding 2.2ml of aciid to the 5gal pail. Result again was 12.0.

Could it be a bad brand of acid(“Kencro Chemicals Oakville, Ontario”)? Hard to believe and doesn’t make sense. I wonder if something else is causing this?

I guess I will go out and try to find a different brand of acid. Here in Toronto(Ontario Canada), finding this acid is difficult. Even Home Depot & Lowe’s stopped selling this acid a few years ago. Perhaps due to the danger handling it.