Need help with hydro issue - lots of details and pics - Page 2

nods · #11 10-21-2009, 01:05 AM

Give them a flush with ph 6.3 water then try
some canna rhizotonic I had something simalar
and was ph to low cause the ph pen shit itself
goodluck

420pharms · #12 10-21-2009, 05:30 AM

they look as though you have more than 1 issue what burnt them and malnutrition in genral im not using your nutes i have used botanicare and now use technaflora,300 ppm is lower than i run my clone tank, first nutes 500-700ppm for about 1 wk. or until i see noted growth 3 new nodes, then i will increase to 700-900 ppm when i flush i will use ph bufferd water only, i lower ph to 5.5 and flush till ph stops rising about an hr. if you get food into your girls ill bet they will recover quickly. im a noob w/o much exp. and i cant post pics with out getting help no matter how stoned i get

li0n · #13 10-21-2009, 09:46 AM

get a bottle of water and check the ppm on the label then measure it with your meter to test its accuracy

JohnQPub · #14 10-21-2009, 10:45 AM

If you're six weeks into veg and are only at 330ppm you are probably deficient. Browning edges on older growth, curling upwards, looks like a MG def to me.

You said you were using RO water and I'm assuming you never reconstituted it with Cal/Mag. I'd try foliar feedings with an epsom salt solution or get some actual CalMag and see how they react.

An excerpt from the marijuana Plant Abuse guide:

Quote:

Magnesium is a component of the chlorophyll molecule and serves as a cofactor in most enzymes.

Magnesium (Mg) deficiency.

Magnesium deficiency will exhibit a yellowing (which may turn brown) and interveinal chlorosis beginning in the older leaves. The older leaves will be the first to develop interveinal chlorosis. Starting at leaf margin or tip and progressing inward between the veins. Notice how the veins remain somewhat green though as can be seen in figure 15.
Notice how in Figure 16 and 17 the leaves curl upwards like they're praying? They're praying for Mg! The tips may also twist.

This can be quickly resolved by watering with 1 tablespoon Epsom salts/gallon of water. Until you can correct nutrient lockout, try foliar feeding. That way the plants get all the nitrogen and Mg they need. The plants can be foliar feed at ½ teaspoon/quart of Epsom salts (first powdered and dissolved in some hot water). When mixing up soil, use 2 teaspoon dolomite lime per gallon of soil.

If the starting water is above 200 ppm, that is pretty hard water, that will lock out mg with all of the calcium in the water. Either add a 1/4 teaspoon per gallon of epsom salts or lime (both will effectively reduce the lockout or invest into a reverse osmosis water filter.

Mg can get locked-up by too much Ca, Cl or ammonium nitrogen. Don't overdo Mg or you'll lock up other nutrients.

HD20038 · #15 11-03-2009, 06:09 PM

just wanted to say thanks for those that helped me out and give everyone a quick little update. For hose who said my girls were under fed, they were right on the money. Alot of people kept telling me it was nute burn, so I was keeping the ppm's low. I decided to go the other way and take the advice of those that were saying I wasnt feeding enough. Man, what a difference. My girls have completely turned around in the last few weeks. All the new growth looks spectacular....roots, stems, leaves.....totally looking sweet! So thanks to EVERYONE for their advice and replys!

dynamitejack · #16 11-03-2009, 06:34 PM

Quote:

Originally Posted by HD20038

just wanted to say thanks for those that helped me out and give everyone a quick little update. For hose who said my girls were under fed, they were right on the money. Alot of people kept telling me it was nute burn, so I was keeping the ppm's low. I decided to go the other way and take the advice of those that were saying I wasnt feeding enough. Man, what a difference. My girls have completely turned around in the last few weeks. All the new growth looks spectacular....roots, stems, leaves.....totally looking sweet! So thanks to EVERYONE for their advice and replys!

I was just about to chime in and suggest they are being under fed, I just looked at my FF feed chart and the ppm should be some where around 1000+

Anyway, follow this schedule and you won't have any problems:
http://foxfarmfertilizer.com/hydrofeed.pdf

or shortened version
botanicare/dutch master/fox farm. how to use em

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