Lowryder DWC Nutes?

guerillagreen

Active Member
Hi everyone.

This is my first post.Im growing 2 lowryder 2 under 125envirolite in a pc case.I I have an extraction fan and carbon filter.The grow is hydro dwc with a 1 liter reservoir using gh nutes.
They are now6 weeks old both flowering nicely.One is more sativa in hieght and the other shorter more indica.
my question is this i have some browning of the leaf tips and they are pointing up.I think this may be nute burn. I have ph of between 5 and 5.8 and ppm of 750 when nutes are fresh. Tapwater ppm of 300.
After a few days the ppm falls to 300 or so and the reservoir requires topping up with tapwater.i change reservoir every 7 days.should i be using more or less nutes??
 
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