Marijuana Plant Problems
experienced hydro growes pls help!!!!! in the
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One indica under 90w ufo led light about 5 inches from top of ...
looks like a combo of nute burn and ph lockout. dwc plants do not need a high ppm of nutes, the roots are sitting in it. i never go above 600 in dwc. when plants are vegging and first couple weeks of flower the ph should be around 5.5-5.7. this allows the plant to be able to get the nutes it needs for growing. at later stages of flower, 5.9-6.2 works good. consistant ph will help.
Let me first caveat what I'm about to say by stating that I don't claim to be an expert in any respect, but I do grow exclusively in DWC and have had 4 successful harvests.
One thing that jumps out at me about your set up is that you are using tap water. I use Fox Farm Nutes and have had similar issues when I used straight tap water. I had slightly better results when I would pass the water through a water filter of some sort (pur, Britta, etc.) and then leave the water in an open container to sit for a few days to allow the Chlorine to dissipate. The best option for home filtration would be an reverse osmosis filter. Costs about $60 at HomeDepot and isn't that hard to install under your kitchen/utility sink. After doing all of that then I would mix the nutes and adjust the ph just as you have been.
I've had better results still with using distilled water from Walmart. The one with the pinkish cap. Costs about 70cents per gallon. This is the best way to make sure that there is nothing in the water preventing the nute uptake in the plant.
I completely agree with what superstoner1 says about watching that ph carefully. 5.5-6.0 is what a rep from FoxFarm told me to hold everything at as well. The other thing they suggested is approaching the addition of nutes with caution. In many cases being willing to air on the side of less nutes rather than adding too much. DWC is like walking a tightrope. All elements must be in sync otherwise it's too easy to have a catastrophic accident. I've killed about 3 plants just because 1 minor thing was off. However, once you get the hang of it you feel like a magician.
Not a hydro guy but resevoir is supposed to be about 68 degrees?
Have a great one. Advice is for folks with a legal grow and worth what you paid for it.
too much nitrogen (thats why your leaves are dark blue instead of green)
needs more potassium
needs more phosphorous
needs more zinc (thats why the brown tips)
needs more of most likely all of the micro nutrients.
give them some flowering nutes and some micro nutrient booster (definately needs iron and zinc)
tap water is not as bad as everybody says. if you can drink it and it doesnt killl your lawn it's ok. dont worry so much about chlorine, your plants require cholrine for growth. its a nutrient.
i had to look up the analysis on those humboldt nutrients, they have ZERO zinc! thats bullshit!!! Check it yourself and youll see, NO ZINC! and are short on iron phosphorus and potassium.
white widow "root inoculation" and "honey" sugar stuff is counter productive in a dwc. stop using them. they will only grow funk in your reservoir. i dont even add that shit to my soil in my garden.
i dont think that stuff will work unless your water has fucktons of zinc and iron dissolved in it from the tap.
Originally Posted by ChesusRice
Originally Posted by UncleBuck
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