reverse osmosis machine help asap

appreciate all the help
5 sk no1 and 5 mk
from seeds
soil 13,5L pot(60%copmst40%perlite ans some garden lime]
7 weeks in to flowring 2 or 3 more weeks to go
tap water ph 7.5 adjust to 6,5 using ph down and the ppm of the tap water is 1500.
been feed with bio grow/bloom 1/2 dose
NOW THE PROBLEM
every thing was ok till 2 days ago when i water the girls 1 liter each of pure water using reverse osmosis machine (ppm 0 and ph 7 adjusted to 6.5 using ph down)only 1 L of water and after 24hrs all kinde of deficiency started
leaves yellow and turn entirly yellow and drop fast small,fan,new growth,
brown spot,brownish leaf tips some curl up and some down ,yellow patches,rusty small brown spot.
all this happen and its happening very fast after 24hrs of feed them with the reverse osmosis water.
really need all the help
thks

Quote:

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Originally Posted by zamoo

appreciate all the help
5 sk no1 and 5 mk
from seeds
soil 13,5L pot(60%copmst40%perlite ans some garden lime]
7 weeks in to flowring 2 or 3 more weeks to go
tap water ph 7.5 adjust to 6,5 using ph down and the ppm of the tap water is 1500.
been feed with bio grow/bloom 1/2 dose
NOW THE PROBLEM
every thing was ok till 2 days ago when i water the girls 1 liter each of pure water using reverse osmosis machine (ppm 0 and ph 7 adjusted to 6.5 using ph down)only 1 L of water and after 24hrs all kinde of deficiency started
leaves yellow and turn entirly yellow and drop fast small,fan,new growth,
brown spot,brownish leaf tips some curl up and some down ,yellow patches,rusty small brown spot.
all this happen and its happening very fast after 24hrs of feed them with the reverse osmosis water.
really need all the help
thks

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more feed maybe ? just a suggestion, im no expert lol

Yes, sounds like a def. If you use RO water you should also use CalMag+ to help replace lost mineral like calcium etc that the RO system takes out. Tap water usually has these minerals already.


Why did you switch over if they were doing well on your regular water? Or was there an issue?

PS Do you mean your tap water is at 150ppm? Never heard of tap water at 1500.

Also what is your humidity level? Fungus problems seem to be going around this time of year.

hi again
thks Weedhound
i have cf ecostick (flashing lights)
my tape water reading
ec 2.4
cf 24
ppm ecx500 ppm1200
ppm ecx700 ppm1680 so what u think???
thats the reading i have in my cf ecostick meter
when i used it with filtered water reading is ppm 0
my tape water ph 7.5
humidity 45 to 60%
you see this happen so fast within 24 hrs of feeding them the filtered water(ppm 0)
i hav,nt feed them much may be 3 time during veg nd 3 time during flowering with 1/2 dose
a nother ? i ve got about 3 week to go i thought of flusing my soil
shall i flush with my normal tap water(with out any adjusting ph)my tap water 7.5 or is better to flush with adjusted ph water to 6,5 or it, or dose,nt matter.
pls help it,s been hard 3 month work
thks all

If it ain't broke, don't fix it.
I am having a hard time understanding why you made the switch.
If I were you I would go back to tap water immediately. Adjust the pH to 6.8 and do whatever you were doing before when you say your plants were fine. At this point, if you think you are having a deficiency, why would you flush even more?