dreday said:
That's your problem.
Every time you water you are adding lockout inducing poison.
I'm glad I popped in - peepz be sending you off for a microscope and shit. Jezus.
You have to understand dreday - that water (I assume it is a municipal source in the USA) has minerals (here, calcium and magnesium in all the wrong ionic forms) in all the wrong dosages, chlorine, chloramine, floride, and depending on where you live and what the local DOT is doing to the roads here in late November, magnesium chloride.
If you stick a TDS meter in that nice clear looking water it'll probably come up with something on the order of 2 or 300ish - guesstimation based on how long you've had your plants going and how long it's taken the build up to become toxic ... although I might be a bit off b/c of the anemic metabolism those CFL's will produce.
Realize that that ppm level is right about the correct
cal-mag dosage in a fully mature flowering plant under HPS lights - again - if you started with pure water and added in the correct amounts of minerals in the correct ionic forms. Any commercial
cal-mag product I mean. To give you a better idea, I use this one:
Anyway - tap water is (usually - local/state regulations often have a lot do with this - do try and keep the republicans out of office) good for people. Trace calcium and magnesium - in any form - is absorbable by our digestive tract - chlorine largely keeps bacteria out of the pipes - and floride at 1-2ppm is good for our teeth.
Roots don't work that way - they work on osmotic pressures across fairly precise pH ranges for these chemical pressures to work properly.
Until you can get an RO filter, consider your tap water verbotten.
Buy distilled - it is usually cheapest at Kroger owned supermarkets. Very pricey (like $1.09 versus .69/gallon) at wal-mart for some reason.
If people look at you funny tell them "I'm thirsty" - j/k tell them you are filling a salt-water aquarium.
Here is the cheapest thing that will work for you: