Coco coir and a fan
 

Well its been a few days since Ive been using a small 4" fan and I've noticed that the coco coir seed starter mix was very dry after getting a good drink Sunday was very dry. So early this morn I watered all cups I knew the fan would make them dry out faster, it usually takes 6 or 7 days now in 3 days they needed water I'm sure the fan had a lot to do with it. But that coco coir has to be the quickest drying mix ever!! Anyone else here notice this too? :surprised:

I've noticed that coir will drain faster so it will dry faster but I like it better than peat because it will rewet so much easier than dried out peat. But I would check and see if the inside is still moist, it might just be the outside is dry.

For me the best way I've found is I look at the 9oz clear cup coco coir when wet is dark brown if its not its dry, and the container is much lighter when it needs water.

Yes, I've noticed that it dries out quicker than Peat mixes, and I really like that. For me, "wet" seedlings are a lot greater issue than drying out more often. Once they get to about 6 weeks old and have good root systems, then it's less critical, so I usually re-pot with a peat mix + added perlite. I do plant in 48-cell packs, so they dry out more slowly than say 72-cell packs, especially when the plants get slightly larger.
-GG