Hm lets see then.
The main reason for a dark start is to get over the ammonia bump that is released by the soil, please someone correct me if I am wrong?
Delicate baby invitro plants dont like to sit and stew in ammonia.
Ammonia gets turned into nitrite by archaea and bacteria, and then a second process turns nitrite into nitrate.
Once we have arrived at this "end" stage, the nitrate will just stick around until either plants or some deep anaerobic substrate eats it.
So since you dont have any plants yet, I would expect some sort of reading for nitrate, to indicate that we're all set to go adding plants.
Alternatively, just a 0 reading for ammonia could be ok, I dont know how plants feel about nitrite tbh.
@dw1305 can you set me straight here?
Do you have a test for ammonia
@pat1cp