deficiency in autoflower

[JP1]

This is a pretty standard issue with autopots and coco. I gave it up after a while. Personally I think it's too much calcium causing lockouts, but this is very common to autopots/coco. Look into the biotabs line. There's a bunch of European growers here that love them with autopots

 

[KingRatt]

You cite using "ph balanced water," which could be a mistake right there.

Using pH Perfect base nutes (with low ppm/EC, ideally RO, water) you should not be adjusting the pH! That is the whole idea of ph Perfect, which works best with zero/low ppm/EC/salts water. Adjusting the pH just means you are adding salts that are both unneeded and can only mess up the "Perfect" pH balancing of the base nutes. If your water has a high ppm/EC, you probably should not be using pH Perfect nutes.
[Check with Advanced Nutrients, which never tells you to adjust pH, search AFN and/or other sources. With well-chelated nutes, including pH Perfect and many finding MegaCrop works too, using inert media (here coco) If you start with good water and minimize adding salt supplements you don't need to and should not be adjusting pH either before or after mixing].

I didnt catch that! Very true!

 

[BII]

What is the EC/ppm of your source water?

You already have among the best nutes. Hard water is a known source of problems no matter what nutes you use.

I suggest using zero or very low ppm/EC water, either:
1) rain water or
2) ideally buy a basic reverse osmosis (RO)-including water filter system. For ex., I've been using Amazon product

 

[Buzzard]

@bamdamhigh ,I must apologize, I missed that you are in autopots. When you said you measured runoff I presumed you were topfeeding. I have no experience with bottom feeding in autopots, so just ignore my comments. I grow in coco but topfeed to 20% runoff.

 

[bamdamhigh]

I gave each of the autopot plants 8-10Liters of nutes solution with 20% less EC. In a couple of days, I will try distilled water in the reservoir with advanced nutrients, let's hope there will not be PH problems again, otherwise, I will have to switch to the bio tabs line from the next grow-on.

 

[BII]

I gave each of the autopot plants 8-10Liters of nutes solution with 20% less EC. In a couple of days, I will try distilled water in the reservoir with advanced nutrients, let's hope there will not be PH problems again, otherwise, I will have to switch to the bio tabs line from the next grow-on.

Regarding avoiding pH problems, they are now solved: If using well-buffered inert media/coco with AN pH Perfect base nutes with zero/low ppm/EC (RO, distilled) water, the pH is not a concern; and you should not be adjusting the water pH before or after mixing. I haven't used my pH meter for at least 5 years. With Adv. Nutr. (or MegaCrop and likely other base nutes), in pure water the nutes buffer themselves within a very plant-bioavailable pH range. With pH perfect, I'd also presume that the usual reservoir pH swings are not a concern. The plants will take up these well-chelated nutrients over a very wide pH range.

 

[bamdamhigh]

@BII Will I need to add CalMag then? as I was only depending on minerals/salts in tap water!

 

[bamdamhigh]

Regarding avoiding pH problems, they are now solved: If using well-buffered inert media/coco with AN pH Perfect base nutes with zero/low ppm/EC (RO, distilled) water, the pH is not a concern; and you should not be adjusting the water pH before or after mixing. I haven't used my pH meter for at least 5 years. With Adv. Nutr. (or MegaCrop and likely other base nutes), in pure water the nutes buffer themselves within a very plant-bioavailable pH range.

I noticed with tap water mixing advanced ph-perfect trio nutes bring the water ph down to 6.5 then it spikes to 7-7.5 every 24hours so I have to handle it manually.

Do you think 6.5 is a safe range for Coco?
I haven't tested yet with distilled water let's hope It will fix the res ph issue as I have a 3 liters of nutes, and I don't want to get rid of them nor the autopot

 

[BII]

I noticed with tap water mixing advanced ph-perfect trio nutes bring the water ph down to 6.5 then it spikes to 7-7.5 every 24hours so I have to handle it manually.

Do you think 6.5 is a safe range for Coco?
I haven't tested yet with distilled water let's hope It will fix the res ph issue as I have a 3 liters of nutes, and I don't want to get rid of them nor the autopot

I have no experience with pH spikes or managing a pH Perfect or other reservoir, which is what you want to learn about here. I suggest contact AN's help line, or do some online research.

I suspect AN will as I essentially would say, "With pH Perfect: Why are you worrying about pH? Why do you want to control it? Forget about it! That's why you use our product. A pH swing into the neutral pH zone is not a problem. Yes, coco and nutrients naturally work best at 5.8-6.0 range, but with our high quality chelation the nutes are very bioavailable, taken up, over a very wide pH range."

 

[Lil Dab]

From what I’ve heard here from other known members AN PH perfect nutes only are ph perfect at high doses and your starting water is going to make a difference whether it be RO or TAP. You can’t believe all the sales gimmicks