ok, but try to feed everyone at the same time to keep homogeneity
its normal for some blocks to dry out faster than others, but rockwool is very oxygenated so its fine
just dont feed lights out, and wait an hour or so after lights on so the plant can wake up and start transpiration
multifeeding only works with big plants in relatively small containers
in rockwool you will get the best results will several small shots through the day
depends of the size of your blocks
the water content of the rockwool will tell you when to feed again
you can wait 10 to 14 days but its far from ideal
thats the best way to guess mold (i say it by experience)
i guess you are using hugo blocks, transplanting a tiny clone directly in it ?
don't run to waste .. i did it for years and it's uneccessary .. plus it can bring you more problems than anything .. because you will always do the smaller runoff possible .. and it will lead to salt accumulations
it's fine to recirculate, if you work fine you dont have to dump your res ...
it will work fine but be careful if you plan to recirculate
these nutrients are designed for hydro, and coco leach a bit of potassium everyday so the npk ratio of your solution can go wrong
in dtw you will be fine
if you absolutely want to test it, lift a pot during the irrigation session and recover the runoff
if you want to avoid the necessity to measure it, give big runoff everytime you water the plants
this way you are keeping the medium free of accumulated salts, and you reset the pH/EC of your...