PH

[VT2011]

I have a 55 gallon tank with a wet/dry filter, emperor 280 and 400 on it. It had caribsea eco-complete planted as substrate, lots of driftwood and peat in the wet/dry filter along with phosguard. I change the tank water with R/O water that comes out with a PH of 5 but i buffer it up to 6 and as the week progresses the PH rises. The PH last week was a solid 6.2 but today it is about 7.5......what the heck and how the heck?

THANKS!!!!

 

[haynchinook334]

i don't know, but driftwood will lower your PH....might be rocks you might of had added?

 

[Hawkfish3.0]

Have you measured your kH and dH? Do you have a lot of aeration in the tank? All of these things will effect your pH.

 

[VT2011]

so....i read the back of the products.....phosguard removes phosphates and all that good stuff.....the buffer im using is a phosphate buffer......wow......maybe i should read the labels.....

 

[Hawkfish3.0]

A phosphate buffer will raise your pH! Looks like you answered your own question!

 

[VT2011]

im not too sure about that....it is low range controller from KENT and it says it contains phosphate buffers.

 

[brianp]

Phosguard is "aluminum oxide". My guess is that is reacting with H+ to form "aluminum hydroxide". But, you may want to give Seachem a call.