Fungi on rockwool

Hi, everyone recently notice this thin film in my water(nasty looking). So I start look everywhere and found this fungi under my rockwool. Anyone know what it is?I have not idea what it is. Heard physan 20 good for problems like this. Any advice would be great.

Thanks for reading

sweetvapor1337 said:

Hi, everyone recently notice this thin film in my water(nasty looking). So I start look everywhere and found this fungi under my rockwool. Anyone know what it is?I have not idea what it is. Heard physan 20 good for problems like this. Any advice would be great.

Thanks for reading

Click to expand...

I have experienced similar problems with Rockwool in the past. It was caused by insufficient drainage. It smelled like mold but I couldn't see any actual fungi. Also I had some salt buildup with a residue that looked like fungi at first. I would flush the rockwool with PH-adjusted water several times and add some h2o2 or calcium hypochlorite to the reservoir.


I wish you good luck with your grow op!


edit: h2o2, not h202. Sorry!

A lil h2o2 (hydrogen peroxide) will get rid of whatever it is a well as the smell along with a huge boost of oxygen to the roots! About 5-10 ml of 3% h2o2 per 16oz should do it....best if you can find the 35% found at beauty store or 29% found at hydro stores usually listed as an oxygenator and dilute to 3% because the 3% sold in stores is said to be stabilized with heavy metals...Ive used all in my organic growing and the all give amazing results!!!

Thank you for the reply.