Cal mag

[BooMtoLate]

I running auto pot with a 47 L res, grow medium is coco and hydro stones. Should I be adding cal mag to my res everytime I change the water out?

 

[BooMtoLate]

I should add I’ve been using 1 ml of cal mag per litre of water for 5 weeks and no problems. Just wondering what people think about it.

 

[bluter]

how are the plants ? if no problem keep at it.

 

[BooMtoLate]

Plants seem fine, growing like weeds.

 

[BooMtoLate]

Just wondering if it’s necessary?

 

[MickFoster]

I use tap water so I very rarely have to use calmag in coco.

 

[Ossi Ossi]

I should add I’ve been using 1 ml of cal mag per litre of water for 5 weeks and no problems. Just wondering what people think about it.

Don't fix nufn that ain't broken they say....