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[allan]

I don't want to jump in here being a boob myself, but that ph seems a bit low.

Do you run a fuge? Reverse cycle lamps?

That will only help for daily swings. If you're reading 7.3 ph now during the day I'm thinking you may want to dose some kalk or calcium to bring up your ph.

Then you need to consider your gas exchange.

[Europhyllia]

that doesn't sound right. I'd check it another way (use a different probe or test kit). It can't be 7.3. What's your salinity and alkalinity?

[Zack]

UPDATE: Got a new PH test kit (liquid type) instead of the dip ones that were used to test the PH and its at 8.2. I have not dosed kalk for the last two days due to moving out the sand, I will continue to do so tonight and re test tomorrow morning.

[allan]

You were using the dip sticks?

I've been tempted to try them as a quick ph check.

[Europhyllia]

good, nano. Glad you decided to double check the test results rather than buffer it up.

[Zack]

You were using the dip sticks?

I've been tempted to try them as a quick ph check.

Yeah, I had some lying around from a freshwater tank that I had years ago, they were pretty old and I checked them in RODI water and the test was off.

If you wanted a quick PH test, try using the ones that they use in chemistry classes. I know there cheap and accurate an I've used them with pretty decent results. The only problem is there not too specific but I'm sure there are ones out there that get pretty accurate reads.