wooden airstone, OK or not?

i found these wooden air stones that are cheap, but the people who left comments on petco comments section said that some black slimy stuff was gettin on it, will this not happen to me cause im not using it for a fish tank. heres the product in case i didnt give good info:
http://www.petco.com/product/9488/Red-Sea-Berlin-Air-Stones.aspx?CoreCat=OnSiteSearch

I wouldnt think they would get slimy since they arent exposed to light, petco for 20 bucks has 6 inch disks that put out allot of air.

coll said:

I wouldnt think they would get slimy since they arent exposed to light, petco for 20 bucks has 6 inch disks that put out allot of air.

Click to expand...

I don't think all stores stock the same stuff, I've been to my local petco at least 4 times and they didn't have any disk airstones, there was one golf-ball circle one but it had all this decorative shit on it.

another question: is a ph scale that can measure between 6.0 and 7.6 ppm good or do i need a different range?

bmn77 said:

another question: is a ph scale that can measure between 6.0 and 7.6 ppm good or do i need a different range?

Click to expand...

I wouldnt do wood since it can grow mold.

How about getting the one that looks like a carbon stone? It might be even made out of it which would filter the water, hah

what Ph scale range do i want? and what range do i want the water to be in?