bio media

[JStrider]

yah the pvc works well and can be super cheap... look on craigslist for deals and scrap... http://houston.craigslist.org/mat/1334787842.html

the worst part of it is cutting it... go to a hardware store and get a ratcheting pvc cutter. its more like scissors for pvc then a saw. then just plop down in front of the tv and get cutting. you'll really build up your grip strength!

Somefishguy is right about the tumbling... I used a 5 gallon bucket... put a few inches of pool filter sand and some 3-4in river rocks as well... then put 4 or 5 inches deep of cut pvc into it. put the lid on and roll around for 5-10 minutes. throwing some lava rocks in there too would probably be really good too.

[JStrider]

just FYI... the tumbling I did didnt really make them seem rough... just kinda took the shine off... better then nothing tho....

[Zulaab]

You have looked at Drs Foster Smith right ?

1125 ct bio balls $40

http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=14725&cmpid=11csegb&ref=3312&subref=AA&ci_src=14110944&ci_sku=0026379000000

[geoff_tropheus]

Now I have to try to sleep tonight with scary Pennywise quotes rattlin' around in my knot. Thanks Geoff.

Mark

That's right Georgie!!! They ALL Float, and you will too!!

[mahoro]

lava rocks works really well....

[koi]

Lava rocks are good some float and some sink. So it works really good I use it for my pond