Nub DWC PH keeps going up

[ringusworm]

Hey hows it going.
I haven't grown indoors for 10 years and a lot has changed.
I have major issues keeping the PH at a good level.
Dwc
144x5 mars hydro led( 22 inches above the seedlings) for now.
Jiffy pots have roots into the res.
Using shop bought spring water.
PH is 5.4 out of the box.
133 PPM
10 litres in the res.
2 long air-stones that run the length of the res.
Small pump circulating the water.
Carbon filter to inline fan hooked up to a fan speed controllers thats the connected to reptile thermostat controller , currently set to activate at 27c as the are only small.

Seeds stock sprouted two weeks ago
1 bag seed two years old and doing the best ?
1 auto skunk
2 skunk #
1 power Africa
Large wardrobe grow.
I will select one or two and plant the rest outdoors.
As i stated PH is 5.4 in four hours its back up to 7.1
Res temp can fluctuate from 17c to 22c
Fairfarms PH up and down is what im using. .25 of a ml with an eye dropper to low water PH slowly.

Also have roots slime, currently treating with 3% h2o2 till the 35% arrives.

I would like to post photos but I'm concerned about the metadata attached to iPhone photos, basically prints the longitude and latitude to the photo.?

I had some nutes in the res to early at 400 PPM.
Maxigro powder.
Flushed res and now just plain spring water.
This is bloody frustrating, though i was just going to roll up grow buds happily ever after.
I have no one to bounce of because no one knows.
Any help would be fkn awesome.

Edited September 15, 2015 by ringusworm

[Ozzy420]

That is one thing with DWC is the adjusting the PH it can be a daily thing i found.

 

Root slime can be cause by the rise and fall of the water temps, try to keep the water as close as you can to 21c.

 

Using H2o2 will kill any good bateria in the water nute mix that will benefit the plant to aid in good growth...

[ringusworm]

Cheers for the fast response.

I took the aquarium heater out, it was set to 18c.

The little pump adds temp to the tank.

I thought the cooler the water meant less algae in the res.?

[ringusworm]

bag seed

Auto skunk

Power Africa

Edited September 15, 2015 by ringusworm

[ringusworm]

Did some googling locations turned off

[weeping angel]

Download irfanview.  Batch conversion with auto corrections, exif data removal, ability to set a maximum file sizes, etc.  It's the shit and it's free

[ringusworm]

i have some beenies made in SA called PREMIUM BENEFICIAL BACTERIA 420 and some organic molasses but for my first DWC i think i have enough to keep me busy.

I was going for a sterile environment.

[ringusworm]

Download irfanview.  Batch conversion with auto corrections, exif data removal, ability to set a maximum file sizes, etc.  It's the shit and it's free

Just been there  Thank you.

Edited September 15, 2015 by ringusworm

[ringusworm]

Well i have nothing to lose.

Brown roots.

PH went from 5.6 to 7.1 overnight.

Going to try rain water and see if it's more PH stable than shop bought spring water.

My Rain water has a PPM of 062 and PH of 6.01.

Clean res and bits first.

Fingers crossed.

[ringusworm]

Or tap water ?

334 PPM

6.9 PH