HELP! NastayNatron's tank

[lo_yyc]

I'm just measuring it with the general automation-ish system that he has. It's actually almost up to 8.8 now, so maybe I'll try the vinegar thing. I'm just a little nervous - can that be a problem when he doses calcium as well?

[Cal_stir]

yes but less likely, does he dose from buckets? check to see if the dosing pumps are running( the bar in the middle turning) or pull the tubing out of the sump and see if anything is coming out of them.

add the white vinegar to a high flow area of the sump, add it a tsp at a time, wait a few minutes and check the reading, it will probably take about 10 tsp before you see a sgnificant change.

check the dosing pumps or remove the tubes from the tank( they could be siphoning), it would be safer not dosing than dosing too much.

[Cal_stir]

also, is he adding kalk to his top off water? if he is remove it as well and top off manually, the kalk would be stored in a reactor of some sort or mixed in a top off container.

i know this is all complicated if you are not familiar with it but you must find the reason for the high PH or it will go back up overnight.

[Gripenfelter]

I would do some large water changes and check all the water parameters.