How to stop green mold on rockwool cubes used for cloning?

When I clone after about 3 days my rockwool cubes end up with green mold. How to stop this green mold. ALso what is the suggested additives for water I am soaking my rockwool in. I usually do this for 24 hours in PH water the ph is 5.5.

deskercise said:

When I clone after about 3 days my rockwool cubes end up with green mold. How to stop this green mold. ALso what is the suggested additives for water I am soaking my rockwool in. I usually do this for 24 hours in PH water the ph is 5.5.

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Don't use them use jiffy pellets. those rockwell are SHIT

As above peat or jiffy pellets for me rockwool and such carry nasties which u could do without during cloning same aplies to riot cubes !!

Green is algae and grows with moisture and light.Keep them covered to stop light or get algaecide for aquariums if it bothers you that much.

I also have green algae on one of my peat pellet clones. Is this something i should be worried about? Or is it ok?

I only use Rockwool. You can prevent algea from growing by covering them with a white block cover. sold at hydro shops.

^ get the covers for sure 10$ for 40 of them and they are re-usable. I only use rockwool even make my own seed pods and I almost never have any issues . And if your watering them to the point its building algae your probally watering to often

I have some 99% iso alchohol; will that destroy top surface algae on rockwool? I have two closet grows running and the algae is only affecting one of them consistently.

Warezaholic said:

I have some 99% iso alchohol; will that destroy top surface algae on rockwool? I have two closet grows running and the algae is only affecting one of them consistently.

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that doesnt sound good to me i wouldnt use iso alcohol on rockwool...not sure but sounds sketchy

Warezaholic said:

I have some 99% iso alchohol; will that destroy top surface algae on rockwool? I have two closet grows running and the algae is only affecting one of them consistently.

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You can use hydrogen peroxide. Like everyone else said, just cover them and all will be okay.

Flick the rockwool downward a little after you water when they're small. Or sit the rockwool on another cube because it will wick out the excess water.

you seriously dont know what algae is?

Damn, I didn't realize that this was a decade old resurrected thread. I've been hornswoggled!

Jjgrow420 said:

you seriously dont know what algae is?

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Hey Jjgrow, Sorry that I am having a rockwool issue I am unfamiliar with and if you are disturbed by my questions, THAN DON'TANSWER MY FUCKING QUESTIONS!!!. I'm 66 and deserve RESPECTFUL CONSIDERATION!

I studied oceanography in 1983, so YES, I Do fucking know what algae is, (a plant that uses photosynthesis like any other and produces most of the worlds oxygen).

And Thank you to those who DID answer me with respect!!!

lol. then why did you ask what green mold is growing on your rockwool
were they unaware of algae in 1983?

I hate rockwool. Used it once. The stuff sucks the big one.

Jjgrow420 said:

lol. then why did you ask what green mold is growing on your rockwool
were they unaware of algae in 1983?

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He didnt ask that someone else did a decade ago! this is what he asked!

Warezaholic said:

I have some 99% iso alchohol; will that destroy top surface algae on rockwool? I have two closet grows running and the algae is only affecting one of them consistently.

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I would think that would kill your plants but not a hydro guy myself

xtsho said:

I hate rockwool. Used it once. The stuff sucks the big one.

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what didn't you like about it?

budman111 said:

what didn't you like about it?

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I don't know. It just didn't work out for me. I know others use it and it's proven. But when I did flood and drain I used hydroton which has it's own issues. One of the reasons I switched to coco.

Rockwool just seems to stay too wet. I probably should have worked with it longer.

xtsho said:

I don't know. It just didn't work out for me. I know others use it and it's proven. But when I did flood and drain I used hydroton which has it's own issues. One of the reasons I switched to coco.

Rockwool just seems to stay too wet. I probably should have worked with it longer.

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yes, hold a very large amount of water, I air prune them on a wire mesh for 2-3 weeks and for the first 3-4 days the dont need water once full and after that its a case of dipping them in water every day for 3-4 seconds only but this is a great technique to learn for a massive airpruned rootball to be put in your sub as choice

lmao i got owned. this threads from 2011
i think there must be some green mold in my brain
ya lol putting 99% alcohol on the roots will kill your plant