And it is ready for (I only grow in coco) some nutes. I allow mine 7 days of just water from seed pop then I begin 1/2 strength hydro nutes, 3 times a day with 10-20% runoff and the plants cannot sit in the runoff water. At around 3 weeks I up it to 3/4 strength.
There's a wealth of knowledge on these pages. Do a search of coco coir growing and dig in. It took me several months and I asked a lot of questions before switching to coco and after 6+ years I'm sticking with coco.
The only negatives with coco growing are the numbers of waterings (fertigations, actually, as every time there's nutrients mixed in) and dealing with the waste water.
Auto watering can be set up to allow one to leave the house
and some type of storage of the waste water that can be pumped out with a sump pump to do it automatically into the soil, i.e. grass, flower beds, trees, or even the sewer. If drained into the yard use a hose that you can move around. Too much of the runoff in one spot can cause problems to other plants and/or trees. Sewer (house drain) can be best for indoor grows.
So, if you haven't thought about watering (fertigating) properly you need figure that out very soon. Until then use tap water that should have some calcium to keep the little ones going and keep that coco WET. Never allow the coco to dry out.
You got a lot of homework to do
