Parameter issue

Esquire805 · Mar 3, 2019

So here is what I know with my hanna checker mu cal is 456 and my alk is 8.0
My tank is montipora and some acropora. My question is is cal to high and alk to low. Ultra low phosphorus kit keeps blinking 20 , I've had problems with phosphorus but no I'll signs of anything. Seems like things are not growing hellllp

Backreefing · Mar 3, 2019

Your alkalinity and calcium are spot on .

Backreefing · Mar 3, 2019

Try reading this
https://www.advancedaquarist.com/2002/11/chemistry

DesertReefT4r · Mar 3, 2019

As long as alk and cal are stable at those levels its spot on. I shoot for 8-9 dkh and 410-420 ppm cal, stable within that range is good for me.

Esquire805 · Mar 3, 2019

Backreefing said:
Your alkalinity and calcium are spot on .

But corals dont all look great

Esquire805 · Mar 3, 2019

DesertReefT4r said:
As long as alk and cal are stable at those levels its spot on. I shoot for 8-9 dkh and 410-420 ppm cal, stable within that range is good for me.

But I wonder why they dont ppl like they use to

Backreefing · Mar 3, 2019

Keeping alkalinity and calcium correct is easy, the real balance is nutrients you need some phosphate and nitrates but low if you have alge growth then you have enough. To drive them to zero is death for sps corals.

Esquire805 · Mar 3, 2019

Backreefing said:
Keeping alkalinity and calcium correct is easy, the real balance is nutrients you need some phosphate and nitrates but low if you have alge growth then you have enough. To drive them to zero is death for sps corals.

Yes but phosphate needs to be lower nitrates is fine

Charlie’s Frags · Mar 3, 2019

Esquire805 said:
So here is what I know with my hanna checker mu cal is 456 and my alk is 8.0
My tank is montipora and some acropora. My question is is cal to high and alk to low. Ultra low phosphorus kit keeps blinking 20 , I've had problems with phosphorus but no I'll signs of anything. Seems like things are not growing hellllp

Is it blinking 20 or blinking 200?