Grey mold (Cobweb) grows very fast and looks like a big puffy cloud. Here are a couple of examples:

After you have contacted us or if you are sure your kit has a cobweb contamination you can try to treat it with hydrogen peroxide. Hydrogen peroxide (H2O2) you can find in the pharmacy as a disinfectant and it is also used for dying your hair blonde.

How do I get rid of it?

You can take the 3% hydrogen peroxide and spray it directly (in fine droplets) on the cobweb and you will see it will disappear. If It comes back the next day you can repeat the process. Hydrogen peroxide is not poisonous and will just break down in water and oxygen. 

Is your kit not growing? Click here and read more about what to do when you're kit is not growing!

Contact us, but do not throw away the kit!

When you see contamination, please contact our customer support by submitting a ticket here or sending an email to 

Please contact our customer support within 21 days. The sooner you contact us, the sooner we can help.

If you suspect contamination, please move the contaminated grow kit to a different room from other grow kits. The sooner you do this, the bigger chance you have with preventing cross-contamination. 

Please do not throw away the kit before talking with our customer support.