What is causing my rusty leaves?

**Dribblesack** · 15-07-21, 04:16 AM

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Hydro wilma 4 pot in 60x60
Amnesia haze auto
9 weeks
Clay balls
Canna aqua
Temp is 22-24
Humidity is 60-70%
Led 600w
Ph is 5.8 and ec is 1.0
Feeding every 3 hrs for 15 mins during lights on
Hi guys could use some help with my diagnosis if possible.
All was going great until it started to flower then i started getting burnt tips although my ppm was only at 400
I reduced it to 350ppm to see if it helped but now got rusty leaves.
Im assuming its a deficiency but dont know what.
Ive now got it at 500ppm hoping it will fix it, but this is my first hydro attempt and only my second grow after a poor to mediocre result growing a white widow in soil a few years back.
Any advice would be most welcome.

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**Deku Nut** · 15-07-21, 04:23 AM

It looks like a magnesium deficiency. Are you using reverse osmosis water?

**Dribblesack** · 15-07-21, 04:53 AM

No just tap water which is 6.5 and adjusting down

**Deku Nut** · 15-07-21, 05:10 AM

I would give it a dose of Epsom salts for deficiency.

**M_C** · 15-07-21, 05:37 AM

I see your feed is at 1.0 EC, what is the EC of your water before you add anything?

**Dribblesack** · 15-07-21, 02:12 PM

Dont know to be honest i havnt measured it.

**Dribblesack** · 15-07-21, 02:31 PM

Measuring my tap water now and it is reading 0.4 on the bluelab truncheon so does that mean if after nutes added and my ec is 1.0 that it is in fact only 0.6?

**Mac** · 15-07-21, 02:57 PM

Originally Posted by Dribblesack

Measuring my tap water now and it is reading 0.4 on the bluelab truncheon so does that mean if after nutes added and my ec is 1.0 that it is in fact only 0.6?

no it means its 1.0, EC

that 0.4 in your water is made up of usable elements like calcium, magnesium etc so go towards the total figure.