Just Planted Seedlings - Ph Up?

[Izzy1980]

Just planted root riot plugs in coco with 29% Perlite, ph is showing as 7?,

Can I use Ph down so early (pics attached, they are 1 pic of each plant),

Any advice would be much appreciated

 

[Nugg]

Idk..I'm hydro but I only use me well water for first week..its 7.1..i haven't had any issues.. then I drop to 6.5 and slowly go down to a 6. To the end.and the ones I throw outside.....,get it from the garden hose..so ...

 

[Izzy1980]

Hi Nugg,

I know that Coco is 5.5-6.8 and as its showing as a tad over 7, im trying to work out whats making it higher, maybe the added nutes in the Coco I used, only.other thing I've added is Perlite (and its neutral Ph)

 

[OldManRiver]

pH matters because it affects nutrient availability. Your seedlings arent really taking in nutes much yet. 7 is fine for now, 6.2 will be better later.

pH Down solution, used as directed, will never hurt your plants, if you stop in the golden range of 5.8 to 6.5 more or less.

 

[Burned Haze]

If your coco than try to keep ph at 5.8-6.2 ( I like it at 6)
It’s the sweet spot for absorption of cal/mag and most of nutes, ive tried 5.8 and I always get purp stems cause I can’t absorb calcium/magnesium as fast as it should.

Soil ph = 6.3-6.5 veg, 6.5-6.8 flower

Hydro ph = 5.5-5.8 ( I’m def no expert, not sure if I’m flower you go 5.8-6.0 to absorb more for hydro)

 

[Izzy1980]

If your coco than try to keep ph at 5.8-6.2 ( I like it at 6)
It’s the sweet spot for absorption of cal/mag and most of nutes, ive tried 5.8 and I always get purp stems cause I can’t absorb calcium/magnesium as fast as it should.

Soil ph = 6.3-6.5 veg, 6.5-6.8 flower

Hydro ph = 5.5-5.8 ( I’m def no expert, not sure if I’m flower you go 5.8-6.0 to absorb more for hydro)

Thanks, do you know if I can add a ph down solution so early in the seedlings growth or could it kill it?

 

[MidwestToker]

I wouldn't sweat it at this time. Coirs natural pH is around 6.5 and as such will always try to recover to that pH.

 

[Izzy1980]

That's really reassuring thanks, when do you introduce nutes to the feed, is it 2/3 weeks into growth dya think?

Izzy

 

[MidwestToker]

That's really reassuring thanks, when do you introduce nutes to the feed, is it 2/3 weeks into growth dya think?

Izzy

Once the true leaves begin to develop then I start feedings at 200 ppms.

 

[Izzy1980]

Im a real newb, what is ppms? Sorry!!

 

[chemistry]

I set my PH at 6.0 to water seeds and cuttings, this way my PH drops or raises to 6.0 or there abouts.

 

[Izzy1980]

Makes sense Chemistry Thank you, I think I make it harder on myself as I read so much and so many different people have massively different views it boggles my mind

 

[chemistry]

Makes sense Chemistry Thank you, I think I make it harder on myself as I read so much and so many different people have massively different views it boggles my mind

Best advise I can give is keep it simple, the more you do the more you have to undo if things go wrong.

 

[Izzy1980]

Good advice thank you, I agree, I just make it harder reading dozens of forums

 

[Izzy1980]

The humidity and temp in my little grow tent are 24-25° and the humidy is around 40%,

Is the humidity too low, ive seen people here on 60% humidity or thereabouts as a rule?

Izzy

 

[Kot]

Ph down won't hurt you plants, don't worry.

Your humidity is too low, yes. I keep 70% humidity during the seedling stage. I never go to 40% even in the flowering.

 

[chemistry]

The humidity and temp in my little grow tent are 24-25° and the humidy is around 40%,

Is the humidity too low, ive seen people here on 60% humidity or thereabouts as a rule?

Izzy

Run my humidity at 50% in veg, a bucket of water with an air stone bubbling in the corner will bump it up if you need to.

 

[Izzy1980]

Run my humidity at 50% in veg, a bucket of water with an air stone bubbling in the corner will bump it up if you need to.

Hi Chemistry and Kot,

Im only growing 2 x Plants, I checked.the humidity today and its 29°, what the cheapest eau to create humidity, I tried a bowl with a cloth inside and 2 inches if water (read it here somewhere), but its made.no difference,

Can't afford a humidifier sadly at the moment?

 

[JWM2]

Im a real newb, what is ppms? Sorry!!

PPM is parts per million. It’s a TDS measurement of total dissolved solids in your water or nutrient feeding solution. Buy a TDS meter and find out what the ppm (or ec) is for your tap water or whatever water you are using to grow. Note the measurement and then add in your nutrients. Then take another reading. The difference is the amount of nutrients you’ve added to your source water.

In hydroponics it’s important to know the conductivity value of your input solution and the value of your runoff or output solution. The difference tells you how well your plants are feeding and absorbing the nutrients it’s being fed.

 

[Izzy1980]

PPM is parts per million. It’s a TDS measurement of total dissolved solids in your water or nutrient feeding solution. Buy a TDS meter and find out what the ppm (or ec) is for your tap water or whatever water you are using to grow. Note the measurement and then add in your nutrients. Then take another reading. The difference is the amount of nutrients you’ve added to your source water.

In hydroponics it’s important to know the conductivity value of your input solution and the value of your runoff or output solution. The difference tells you how well your plants are feeding and absorbing the nutrients it’s being fed.

Wow, I hope Im as knowledgable as you o e day!!, that's great, thanks so much for taking the time to explain, you need to learn so much its great learning!!!