Need to figure out why ppm steady pn the rise.

J232

J232

Well-Known Member
Bucsfan80 said:
So I cut rez solution down everyday by as much water as I could add and monitored it until I hit around 750-770 ppm and I noticed they drank at least a gallon over a day time cycle and ph stayed static and ppm stayed static so only solution level was dropping so instead of topping off with just ph water I topped off with a gallon or two of nute water and that seems to be the magic ppm range (750-770) I thank you for your advice and am now having to add at least 1 if not 2 gallons a day. Bad part is I'm getting low on nutes and new won't be here till Monday or Tuesday. Think I have enough to keep topping off just cant do a full change till then. Just thought I would update with the results bongsmilie:bigjoint:
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Nice, glad you got back on track. They will probably want less feed as time goes on. Doing what your doing will tell you, should be a good finish. By the end, you will want to be 1/4 to 1/3rd strength solution, just keep them happy till harvest.
 
Bucsfan80

Bucsfan80

Well-Known Member
J232 said:
Nice, glad you got back on track. They will probably want less feed as time goes on. Doing what your doing will tell you, should be a good finish. By the end, you will want to be 1/4 to 1/3rd strength solution, just keep them happy till harvest.
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Gotcha ill keep a close eye on it. Its good to learn all this fine detail stuff so on the up coming one ill know what and when to expect these things. Should be a little easier also cause I'm going for just one monster next time no mixed strain stuff
 
PhaseHB

PhaseHB

Active Member
I am having the same problem. Week 6 of flower ppm is rising and my 2 girls are drinking 4 to 5 litres a day. Been topping off with nute water, might cut it to 50% and may top off with ph only water every other day
 
Bucsfan80

Bucsfan80

Well-Known Member
PhaseHB said:
I am having the same problem. Week 6 of flower ppm is rising and my 2 girls are drinking 4 to 5 litres a day. Been topping off with nute water, might cut it to 50% and may top off with ph only water every other day
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What ppm did you feed? I stopped topping with nutes and just used phed water until it balanced its self out. It took 3 days of just water but for me between 750-770 was were they liked it. Ph and ppms didn't fluctuate hardly at all. Then just top off with nutes to stay in that range
 
PhaseHB

PhaseHB

Active Member
Bucsfan80 said:
What ppm did you feed? I stopped topping with nutes and just used phed water until it balanced its self out. It took 3 days of just water but for me between 750-770 was were they liked it. Ph and ppms didn't fluctuate hardly at all. Then just top off with nutes to stay in that range
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It all started when I added a PK booster last week and have had the problem since. Never added the booster again

I did a rez change over the weekend and set ppm at 900. The day later ppm was at 880 topped it up with nute water. A day later ppms are up 940 and rising. Today ill top up with ph only water
 
Bucsfan80

Bucsfan80

Well-Known Member
PhaseHB said:
It all started when I added a PK booster last week and have had the problem since. Never added the booster again

I did a rez change over the weekend and set ppm at 900. The day later ppm was at 880 topped it up with nute water. A day later ppms are up 940 and rising. Today ill top up with ph only water
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I'd try a couple days water only see how they react.
 
calvin.m16

calvin.m16

Well-Known Member
When your PPM goes up does your PH also go up or stay the same? The PH buffering agent your using could be being leached from the plant and be going back into the nutrient solution reservoir. With a difference of under 100 PPM it could just be your pen? I know some cheaper pens will read different PPM at different solution temperatures. The raise in temp could be causing it to have a different reading on the EC/PPM value.
 
calvin.m16

calvin.m16

Well-Known Member
Bucsfan80 said:
I'd try a couple days water only see how they react.
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Do not ever use plain water in DWC. That is asking to stress the ever living hell out of your plants. I did that a year ago and it literally shut my plants down for at least 8 days from stress.
 
calvin.m16

calvin.m16

Well-Known Member
Bucsfan80 said:
I'm seriously thinking about throwing ec meter away. It just complicates things and if you have a decent nute line and PH regularly I think all would be fine
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lol don't throw away your pen if anything invest in a Truncheon by Blue Labs so you always have accurate readings, also the Truncheon cross references EC/PH500/PH700 scales on the same wand and doubles as a stir stick.

It's cheap insurance. The $140 can save you thousands in the long run.
 
PhaseHB

PhaseHB

Active Member
calvin.m16 said:
When your PPM goes up does your PH also go up or stay the same? The PH buffering agent your using could be being leached from the plant and be going back into the nutrient solution reservoir. With a difference of under 100 PPM it could just be your pen? I know some cheaper pens will read different PPM at different solution temperatures. The raise in temp could be causing it to have a different reading on the EC/PPM value.
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Ph is currently rising with the EC and water level is falling. And sometimes ph will stay the same
 
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