.4ec tapwater causing big problems?

[roasthawg]

So I have a new spot fired up and am having a hell of a time. Plants look awful in all stages and seem to be getting worse the farther along they get. I grow with the exact same equipment and nutes everywhere I go so I'm thinking it must be the tap water. Problem is it's only .4ec. Plants look mag deficient to me but adding epsom salt and lowering the ph a little hasn't done anything to help the problem.

Rooms are dialed.... 80 degrees, 60 rh, 1500ppm co2.
Medium is rockwool. Nutes are gh lucas at 4/8. ec after mixing everything is 1.9. PH is 5.5.

I have a 1000gpd ro unit on the way... thought I could get away with the tap water but doesn't look like it. In the meantime I thought I'd ask icmag and see if any of you have had similar issues with tap water with an ec as low as .4?

 

[Treetroit City]

Something off gassing? I doubt it's the water...

 

[roasthawg]

Something off gassing? I doubt it's the water...

Thing is I have multiple rooms showing the same symptoms. Veg rooms looks like shiz, and all I have running is lights and ac in there. Flower rooms look just as bad with lights, acs, dehum, and co2.

Rooms are drywall with paint.... I guess it could be the paint except I've used the same paint in other rooms with no issues.

 

[roasthawg]

After reading around it definitely might be my burner... turned it down from 1500ppm to 400ppm for the time being. See if that helps... still doesn't explain why the veg room looks bad as I have no gas going in there.

 

[Granger2]

Just in case, lay 1" thick slices of raw potato on surface of medium. Check bottom side daily for 10 days, looking for Root Aphids or other soil pests. Good luck. -granger

 

[Dropped Cat]

Roots, look at the roots.

 

[George]

0.4 ec is fine. I don't use the tap full force here, but I do have friends here that run the regular tap water which is .9 ec out of the tap. People will tell you that will fry your plants but seems just like everything on the net it's always exaggerated info. Stuff comes out ace. You could have water problems sure but I think it would have to be something bad in the water not the concentration of salts. When's the last time you cleaned and calibrated your meter?