It's not necessary to have the superfine bubbles. Get as fine as you can without spending a bunch. I like the green, tube-type air stones (not really a stone). They last forever unlike the real air stones, and you can wash them if they start to get plugged up, and you can cut them to any length. The real stones seem to last for one or two grows, then they fall apart. Walmart pet section.
Opie Yutts Reviewed by Opie Yutts on . Quick Question on Airstones? Hey, I was wondering how important it is to have a good airstone with fine bubbles? Because I am modifying my system and I need to add 8 new airstones... and I would rather not spent $50 per airstone for the ones that produce fine micron bubbles. What is an acceptable micron level for growing plants hydroponically? If anyone has found good cheap ($20) airstones that work I would be forever grateful :stoned: Thank you all for your time. Rating: 5