DSM Mold (?)

[99problems]

So I'm growing DHG with the DSM. Light cycle is about 10 hours, there are no pools of water, and I keep the humidity up (but ventilate it every day for a couple minutes).

But there is something white growing on the tips of the DHG (sorry if you can't see it on the picture below). It rubs right off- what is it and how should I get rid of it?

[Monster Fish]

It looks like mold. Here's my DHG belem growing emersed under a CFL for about 3 weeks now.



No mold whatsoever. The substrate is MGOCPM with some osmocote pellets.

What's the substrate and how long do you let it ventilate? It's kinda hard to tell but it looks a bit dry. Cut off the moldy parts and increase the ventilation.

[99problems]

I'm using EcoComplete as a substrate, letting it ventilate maybe 30 minutes after I turn off the light each night. Mine is definitely not as wet as yours- I thought keeping it that moist is super conducive to mold?

[Monster Fish]

Originally Posted by 99problems

I'm using EcoComplete as a substrate, letting it ventilate maybe 30 minutes after I turn off the light each night. Mine is definitely not as wet as yours- I thought keeping it that moist is super conducive to mold?

You can keep the substrate saturated. I think what causes mold is the lack of air movement around the plants during the dry start. In my emersed setups, the plastic wrap is a bit loose, so fresh air can flow in. Also the submerged leaves are slowly dying back, making them food for the mold. Once the grass is comfortable with the emersed setup, it should grow and spread rapidly without any problems.

[wastedtime]

Submerging will get rid of the mold, but in your case when misting mix a little KH2PO4 along with the water used for misting, the mold should go away.