lovebubblehash
Member
wats the best procedure to flush an hydro and how any days . i want it nutrient free?
dense medium with poor drainage? it's a bucket of water with no drainage...No need to flush in DWC unless you are using a dense medium with poor drainage or you have given them high strength nutes over 1000ppm .5 conversion or over 1400ppm .7 conversion for an extended period of time.Flushing is a never ending debate some 4 some against.
The medium i mean is on top of your reservoir,like peat pellets,grow rocks,rock wool.If you are using rock wool for example(witch is a dense medium that stays wet,soggy for a long period of time and has poor drainage) and you are constantly flooding it with high EC nutes,then yes you need to flush.But why would you want to take food away from your girls right at the height of production and anger them with no nutrition?You have seen yourself that flushing makes no difference.Dense mediums retain the salts after it has dried,soil needs to be flushed not DWC.Besides nitrogen plays the most in bad taste of your bud,witch is taken up very quickly by the plant and doesn't hang around in the solution at high levels very long,also cant be measured by ec,ppm meters.I believe K also plays a role in bad taste.Check your ashes are they white?Salts need to accumulate in order to need to be flushed,this may be the case for soil but not DWC.dense medium with poor drainage? it's a bucket of water with no drainage...
i've flushed and i havn't flushed and to be honest i can't tell the difference
Im the same after my roots hit the water,I only wet the my medium(peat pellets in grow rocks)with pH balanced water,I feed the pellets only once a week full strength nutes.Sounds like your good I would just keep your wool damp.ah, i get you. however once my roots are grown, my rockwool doesn't get any nutrient and water, pretty much dries up and that's that. most likely i'm doing it wrong.
likewise. i sometimes here and there throw a drop of water onto the rockwool (just a silly paranoia thing about the bad weegie that goes on when rockwool is dry, other than that though, it has no real benefiot as far as i can logically work out. my water normally stays around 3 inches from the bottom of the tub, lazy likeAfter rooting water/nutes never touch the rockwool again in my set-up.
I keep the water/nutes just below the bottom of the rockwool - works great for me.
I was about to say about the same thing. Honestly, it really is one of those things you simply need to experiment. I, personally, think flushing DWC is an absolute must, but that's only because I like most other people experimented without flushing, and I had a really disgusting product as a result... black ash, tasted like crap, etc.Never-ending debate fo sho. I've heard from 2 days to 2 weeks. Some say they can tell the diff, some say they can't. Without a "real" scientific experiement, including assaying harvested cloned plants in identical conditions with only the flush time as a variable, we will never know for sure. Some people also "middle of the road" it by just dropping the PPMs for the last week or two. I did that - between 100 and 200 ppm for the last 2 weeks - on my first and most recent grow. This time I am going to keep full strength until the thing looks "ready", then do a Clearex flush and water only for a few days at most. Just another stoner's opinion for ya!