Low PH and low DKH

[fishboy1]

Hi everyone I need some help. I tested my ph and it says 7.6 and my DKH is 7.4. I did the cup test and the water read ph 8.2. I did a water change today and the mixed water read DKH 13. I took a picture and quick vid is this enough for water agitation, if not how would I increase it. Problem is I have no other test kits to measure calc or mag and my ph test kit is out of date but the cup test did shock me.

 

[fishboy1]

Forgot to mention I have a bag of crushed coral in chamber 3 at the back of my DT. The reading was DKH 8 and in chamber 1 I have my skimmer in it with an air tube going outside.

 

[Randy Holmes-Farley]

The alkalinity was fine at 7 dKH .

the cup experiment was with inside air or outside air?

 

[fishboy1]

Outside air.

 

[Randy Holmes-Farley]

Try with inside air too. That will tell you if you just need more aeration, or if you also need lower C02 air.

 

[fishboy1]

Just tried the indoor air and it measured ph8.2.