Tap Water 250 ppm

[MyFirstBud]

Is it too dirty?
hydrohut temp 78
ph 5.7-5.9

[MyFirstBud]

sorry about that
water temp 85
nutes 900-250 dirty water=650
plants are going yellow tips drying out overall plants are getting worse day by day, Im lost at this point already flushed out entire res, 2 days ago plants continue to die, would appreciate all advise and comments.

[MyFirstBud]

some pics of what they look like

[hymee]

Use distilled water or reverse osmosis filtered water first of all. Most tap water is dangerous for any plants.
As far as your nutes go. You may want to flush the system and run the drip system with plain distilled water for a bit. Then mix fresh nutes at a 1/2 strength mixture for seedlings. Basical whatever your nute bottles says they are supposed to be getting right now...give them half that. After a week give them the full strength solution.

[DarthHerbage]

My tap water's PPM is about 180ish.

Keep in mind that I'm a n00b, but I use General Hydroponics 3 part nutrient series but use their Hard Water Micro instead of the regular kind. My plants seem to be kicking a lot of ass and taking names (see link in sig for pics).

Just sayin'.

[MyFirstBud]

flushed system out 2 days ago, not getting better.
using foxfarms grow big 6-4-4
my ph up also contains a multiple base nutrient, phosphorus,boron,sulfur,nitrates

[hymee]

You tap water has a lot of stuff in it that's bad for plants. You can let it sit out for a few days and some of the stuff will evaporate out and then the water could be ok to adjust PH and use. I wouldn't trust my tap water on my indoor plants to save my life. Distilled water and RO are best.

[DarthHerbage]

I have to reiterate that I'm a complete newbie to growing, so take everything I say with a grain of salt.

However, I wanted to make sure that you didn't have one of the "killer" hydrohuts. Some of them were recalled because they were killing plants, etc. Search this site or google "killer hydrohuts".

[Help_Needed]

Originally Posted by hymee

You tap water has a lot of stuff in it that's bad for plants.

No offense, but that's not an accurate statement. The ONLY thing that you find in most tap water that will hurt a plant is chlorine. And if you let the water sit out for 24-48 hours, the chlorine will evaporate. In fact using tap water can actually be helpful for a hydro grow because it usually has magnesium and calcium in it - two of the most common nutrients that plants seem to get hungry for. Most hydro growers who use distilled/RO water end up having to buy a cal/mag supplement.

Before deciding to use your tap water, check the TDS. If it comes in higher than 300ppm, don't use it, otherwise you're probably fine.

To OP: You're running at 900ppm with young plants? If so, that's really too hot for them. I'd back that off to about 500ppm for another week or so, and then gradually move up to full strength when they get a bit bigger.