Using a Car Wash Sponge as a growing medium ?

awesome!! I would check the ph before trying it

man that looks like a mold/fungus factory. Me thinks not such a good idea

yah, i read that same article a month or two back and would also love to hear of anyone who has tried this before..

Yea I am looking at using some alternative mediums as well for grow ( I'm an experimenter)! That sponge looks nice and soft, however the cell spacing may be an issue for rooting but not bad and quite possible IMO. Hey it busts right thru Rockwool cubes easily, although sometimes thru RW roots reverse after hitting a dead end huh...?

I am also looking into using POLYFILL as a medium, you know the stuff that fills pillows and teddy bears! It is similar to Suretogrow products I think and thats where they advanced ther product from I believe. Anyone?

these sponges are made to suck as much water as it can and will be totally saturated with no aeration. rockwool is probably cheaper too and allows aeration. IMO drop the idea

There's no way I'm washing my truck with that!