Water changes equals death

[ase0227]

This has me stumped. Iv been fighting this problem for over a month now and cant for the life of me figure this one out.
I use Brightwell neomarine salt, I dose aminos about twice a week, just a few drops, my tank is just over a year old parameters as follows
Sg 1.026
Nitrate 20
Po4 0.00
Mg 1500
Added magnesium sulfate shooting for 1450 and overshot it but has no correlation with my coral losses
I dose nothing else I use rodi water 0 tds
I make sure the params. Match and the temp matches and I'm only doing extremely small frequent water changes (1 gal a day). I emptied out, cleaned, rinsed and refilled my holding container with fresh new salt water and still like clockwork everytime I do a water change I have an sps coral either stn or rtn shortly after. Anyone have any ideas????

 

[AZMSGT]

How old is the tank?

 

[ase0227]

Just over a year

 

[WIReefer]

Your PO4 should not be 0 that is most likely why your sps is not doing well

 

[code4]

If your nitrates are 20 that could be a problem

 

[WIReefer]

Also what is your Alk at?

 

[ase0227]

Nitrates crept up over the passed few days because I stopped carbon dosing thinking that might have something to do with it but b4 that it was 5

 

[ase0227]

Also what is your Alk at?

9.2

 

[ase0227]

Steady 9.2 to 9.4

 

[WIReefer]

Steady 9.2 to 9.4

Okay that’s not bad I try to keep my Alk around 7.8 - 8.0, if your PO4 is reading a true zero than that is a issue sps need that.

 

[ase0227]

I agree but I cant correlate that with the water changes and the almost immediate death that's been occurring

 

[ase0227]

I thought maybe bacteria in my holding tank but I eliminated that

 

[WIReefer]

I agree but I cant correlate that with the water changes and the almost immediate death that's been occurring

Personally I was in the exact same boat as you I added a few more fish and fed heavily and it brought my PO4 in the correct range and haven’t had a problem since.

 

[ase0227]

Personally I was in the exact same boat as you I added a few more fish and fed heavily and it brought my PO4 in the correct range and haven’t had a problem since.

Well then I will give it a go and see, thank you for the replies. Iv been ripping my hair out so far

 

[lemonade]

Have you checked your RO/Di source with a TDS meter?

 

[ase0227]

Lol, just installed it today
32ppm tap
0ppm membrane
0ppm Di.

 

[ase0227]

I got the triple HM inline meter

 

[Riphter]

Could your refractometer/meter be reading wrong and what you think is .025 water and it not?

 

[JoshKReef]

Send off a ICP, maybe you have some heavy metals.

Check for stray voltage.

Do you get the WC water to tank temp? You could be temp shocking everything if you don't.

Don't take offense do this, but explain how you do your water change. I have seen people remove water, add RO, THEN add salt to their tank. Hopefully you aren't doing that.

 

[ase0227]

Could your refractometer/meter be reading wrong and what you think is .025 water and it not?

Thought of that as well so I replaced it about a week ago