Ans Power filter (rocks)

[s0n1c87]

Hi. I'm using ANS rocks as a weight to sink my driftwood. I wonder will those rocks increase the GH?

[florakid]

Dont think so. Does it say anything on the box etc?

Get a pail of water, aerate it and leave for 24hrs. Measure ph after 24hrs. Put in the rock, take anither measurement of the ph 24 hrs later. The raise/fall in ph will give u an ideal whether the rock affects ph