low ph in new tank, help please

[cginex]

Hey i set up my 30g aio on Friday with saltwater purchased from local shop. It's their water. I added 30 lbs of man made purple live rock and 20lbs of live reef sand. Checked my levels today and my ph is 7.2 and my alkalinity is 60 ish. Any thoughts? I've had pump and filters on and my reef full spectrum tablet light on. Light 8-10 hours a day and filer/pump 24/7.

i am checking salinity with my Instant Ocean hydrometer....salinity measures about 1.025, same as it was when i put it in the tank friday night. that is fine isnt it?

also, as for testing the water i am using test strips, i think tetra makes them.
http://www.petmountain.com/product/a...FQne4AodXysA8w

Thanks for the help.

 

[mike007]

You may need to add buffer to raise the ph. If your lfs is making saltwater i would think the ph should be around 8.3. Maybe you should take a sample and have them check it. Never heard of Tetra saltwater test kits.

 

[Downbeach]

You need to look into getting better test equipment. This is one I used successfully, for the basics, and this one for Ca, Mg and Alk. Ultimately you'd be better served to use this and this to test your SG.

 

[Reefing Madness]

Agreed, test strips aren't goin to be very accurate at all. Kinda like using a Hydrometer, ya never know where its going to land today.