Use an ec metwr to check your run off. But i never ever check run off, i havemt for 3 dyears or more. Only time i would checknrun off would be if i maybe had a problem with plants.
I dont grow in soil and havent for years so there arw more experienced than i when it comes to giving advise on soil grows but i will give you my tjoughts anyway.
Firstly be careful that you dont flush too hard and get bud rot. If you drown your plants all that water will stay in the pots and bump up humidity significantly. If you have any dense buds it could cause bud rot and you def dont wsnt that.
Use your eyes to look atbthe plants and they will tell you uf they are clean. The leaves will have softened from green to yellow all over the plant, not just at the bottoms of plants this shows the plant has used up its stored resources. It means its not taking nutes up from the media either. The leaves ahouldnt be rusty or crunchy.
Sometimes its necessary to blast the medium with plain water but if your nute mix was correct you can just trà nsition to plain water for 7-10 days. First flush with around 20% run off then i have no run off or very little and just water daily.
I used to blast with water and check run off and sometimes it would take 40litres or more through a 12litre pot to get the run off reading whatbit went in at, doing this to rooms with 40+ plants is tedious and always resulted in budrot.
I dont grow in soil and havent for years so there arw more experienced than i when it comes to giving advise on soil grows but i will give you my tjoughts anyway.
Firstly be careful that you dont flush too hard and get bud rot. If you drown your plants all that water will stay in the pots and bump up humidity significantly. If you have any dense buds it could cause bud rot and you def dont wsnt that.
Use your eyes to look atbthe plants and they will tell you uf they are clean. The leaves will have softened from green to yellow all over the plant, not just at the bottoms of plants this shows the plant has used up its stored resources. It means its not taking nutes up from the media either. The leaves ahouldnt be rusty or crunchy.
Sometimes its necessary to blast the medium with plain water but if your nute mix was correct you can just trà nsition to plain water for 7-10 days. First flush with around 20% run off then i have no run off or very little and just water daily.
I used to blast with water and check run off and sometimes it would take 40litres or more through a 12litre pot to get the run off reading whatbit went in at, doing this to rooms with 40+ plants is tedious and always resulted in budrot.