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I have some leaves that are starting to look very much like the pic you posted. What causes LSF?

I change it once a week already.

I've been using this ph chart.

I'm not entirely sure what the problem is, I'm just going by this chart. I may try dropping the ppm to 1200 next crop. I'm about to start pre harvest flushing tomorrow, so they will get only water for two weeks.

You said you burned them. That is a shock.

I have two different strains growing, and they feed from the same res. The problem only shows up on one strain, not the other. I'm giving them 5ml per gallon now. What should I go up to?

Stunted growth due to shock most likely.

This is everything that goes into my flowering res.

I already use Cal-Mag Plus. Just checked ph, it is at 5.82. No ozone generator.

New growth is healthy. It is only the large leaves that grow off of the main stalk... for now. I'd like to stop it before it spreads, if possable. I flower in hydro drip irrigation, Botanicare nutes, ph ~5.9, ppm ~1600 (flowering). Been using this same setup for about a year. This problem has...

At first I thought this was spider mites eating my leaves, but there are no spider mites. The "Nutrient and Deficiency Table" states the symptoms I have here as being Mn deficiency. I change my res every week, and clean everything out every two weeks. Any input?

Lookin good. It is kinda strange that you have all the little nodes under the main canopy. They don't seem to be growing much.

At first I thought this was spider mites eating my leaves, but there are no spider mites. The "Nutrient and Deficiency Table" states the symptoms I have here as being Mn deficiency. I change my res every week, and clean everything out every two weeks. Any input?

The heat problem was probably a big part of it. I hooked up my 400 watt HPS about a week ago, and my temps are starting to become an issue (between 84-90 degrees). Some of my leaves have started to yellow and get crispy, way worse than yours. They are sleeping right now so I can't give a pic.

Reverse Osmosis. It's a type of filtration that brings water to 0 ppm.

$150 with coupon. It is a complete system, -battery. Depending on the intended use an inverter isn't required. For example, I know someone who uses it for a hunting shack with 12 volt appliances and lighting. I'm looking to buy some larger panels. Most batteries have between 3-5 year...

45 watts isn't much help, it is the first set of panels I bought. This is my first endeavor into solar power, so I went with an inexpensive setup to get a feel for it. The kit comes from harbor freight, and with a coupon you can get it for $150. It comes with 3 x 15 watt solar panels (45 watts...

I don't have any current pics of the solar setup. I'm using cheep panels, because I'm just getting into it. Each set of 3 panels produce 45 watts. Here is a pic I took when I set up the first set of panels I bought. This is a Pic of how my setup is laid out. There is a 3 position toggle...

Less water when using rockwool, it holds water like a sponge. You have a LOT of algae. If you cover the rockwool, so that no light can shine on the algae, the algae will die. Algae can attract fungus gnats, the larvae of which will eat your roots, so be careful.

My electric bill is between $500 - $600 in the summer. I have 2 central AC units. I have solar panels hooked up to a grid tie inverter to help lower the bill some. There is a nifty tool called a Kill-A-Watt that you can use to find out exactly how much power a device is using. You would be...