Rockwool Cubes going green... why?

[steeltownstoner]

Hey Everyone,

I'm currently in the process of my 1st indoor grow, with a small 2x4 ebb and flow table. My seedling cubes were placed into 4" grodon/rockwool cubes about a week or so ago and feed with DNF Grow A+B 3 times a day on a 30 minutes cycle.

I've been noticing the cubes are starting to get a little green and was wondering what conditions could be causing it. Any SUGGESTIONS?

My specs can be found on my grow log, but just to summarize:

lighting - 4 x 42w CFL bulbs (2 - daylight, 2 - warm)
Air Circulation - 3 speed pilar fan suspended from ceiling
Water - pH balanced, in black rubbermaid res., with DNF Grow A+B formula

[xcrispi]

Algee from light .
Crispi :stoned:

[stinkyattic]

Algae isn't bad in and of itself. Just when it dies and rots, then you can have problems.

[IAmKowalski]

Hey Everyone,

I'm currently in the process of my 1st indoor grow, with a small 2x4 ebb and flow table. My seedling cubes were placed into 4" grodon/rockwool cubes about a week or so ago and feed with DNF Grow A+B 3 times a day on a 30 minutes cycle.

I've been noticing the cubes are starting to get a little green and was wondering what conditions could be causing it. Any SUGGESTIONS?

My specs can be found on my grow log, but just to summarize:

lighting - 4 x 42w CFL bulbs (2 - daylight, 2 - warm)
Air Circulation - 3 speed pilar fan suspended from ceiling
Water - pH balanced, in black rubbermaid res., with DNF Grow A+B formula

World's cheapest cube cap: Get some plastic thick enough to block light and cut pieces a couple inches larger than your cubes in each direction. Cut a slit from one side to the center for the trunk to pass through. Cover the top of the cube, fold around the sides, and hold in place with a rubber band around cube and plastic.

[Greenthing]

World's cheapest cube cap: Get some plastic thick enough to block light and cut pieces a couple inches larger than your cubes in each direction. Cut a slit from one side to the center for the trunk to pass through. Cover the top of the cube, fold around the sides, and hold in place with a rubber band around cube and plastic.
Agree 100% thats what I did with mine.
Leave a bit of room around the base of the stem.

[stinkyattic]

Also prevents thrip infestation ^^^ and can be used over pots of soil, where thrips breed most aggressively.

[Greenthing]

I believe algae is harmless and it does not complete for food (nutes).

[stinkyattic]

Although I find ants at a picnic annoying, they do not consume enough of my potato chips that I get concerned that I will go hungry.

[Greenthing]

But its awfull when they get in your pants dear Lady.
Sorry off topic.:jointsmile:

[stinkyattic]

True. You have a point. Ants at a picnic are worse than algae on your rockwool cubes. :jointsmile:

[steeltownstoner]

Thanks everyone! Wow, away for one day and already a myriad of responses. i think i have some black plastic left over from when i wrapped from frame (think they called it panda). This should be thick enough to block out the light, yes?

[IAmKowalski]

Can you see light through it? If yes - then no. If no - then yes. Or something like that :-)

Actually, it's not even critical that it COMPLETELY block light, I think the last time I just used plain old white kitchen garbage bags - double layered 'cause the stuff is pretty thin, but that was enough to keep algae from growing.

[stinkyattic]

Panda is perfect. White side up, black side down. Leave it loose for air flow so you don't get rot.
LOVE that shit. LOVE IT!