Drosera seeds germinated but don't grow bigger - what to do?

[plantnerdjules]

Newbie seeking help please. I purchased Drosera "coccicaulis" seed (=D venusta?). Sowed some on pure long sphagnum, some on sand:peat. Some under bright light, some less bright. So far I had the same results for both media, both light conditions. All are under cover with grow lights, ambient temperature 22 to 30 degrees C, 70 to 85 degrees F,  humidity 60 to 70%.

Seeds sprouted about 3 weeks from sowing - observed with magnifying glass.

Each plant less than 1 mm high, less than 1 mm across its two leaves. They are bright green but no increase in size after more than 2 weeks. What is wrong?

Probably no insects small enough for them to catch. Do I need to 'feed' these tiny seedlings? If yes, what nutrients/how to apply?

Advice much appreciated!

[hcarlton]

They won't grow if they have no nutrients. If there are no springtails or soil mites to catch, they need to be fed (and they are venusta). As a basic start, aside from the ICPS pages on Drosera: www.growsundews.com/