Styrofoam Cement Rock Background Attempt

[N8DOGG]

mine went up to 8.4 or a little higher with just some cement blocks in the tank. It would be a great range for some african cichlids. I didn;t keep them in log so I don't know how long it would stay high. I have a cement hoop that I made to test I'll put it in some water this weekend and Take readings.

 

[saltyc]

On the Garf website (garf.org), there are some really detailed instructions on how to make cement "reef rock". They suggest letting it sit in vinegar for a while (I seem to remember it said a week or so). Couldn't figure why, but now it makes sense-that will help to lower the ph and cure the surface. Maybe that would help!
The section on the website is titled Aragocrete, or something like that.

 

[Seaman]

yea my PH test strips go up to 8 and it pegged 8 for the longest even with 50% water changes every other day, outta the tap and let sit for a couple hours my ph is high 6. But ya get some frican cichlids and that wold be great for them.