Why is my ph slowly dropping after few days of reservoir change?

[Dailypunch21]

Anyone know why my ph would slowly be dropping after a reseravoir change? Plant seems to be eating and ph will raise but after I correct it, it continues to drop..

 

[projectinfo]

Anyone know why my ph would slowly be dropping after a reseravoir change? Plant seems to be eating and ph will raise but after I correct it, it continues to drop..

Some pictures would help.

Whats your waters ph that you use from the tap ?

What nutes are you using what pphm are you at?

Pictures would help.

 

[Dailypunch21]

Using ro water, cultures solutions nutrients, ppm is 320, water is 66 and ph is 5.9. I am in week three of flower the plant looks good but really small buds..

 

[projectinfo]

Ah, the r/o water.

You going to have to add some calmag first to bring up your water to 150 ppm befor you add anything at all .... Even if you plan to add more calmag you have to have a base of 150ppm to buffer ypur water.

Espsom salts for your bath also work.

 

[Dailypunch21]

There’s calcium and mag in the nutrients already.. no purple stems or signs of calcium deficiencies.. I’m dont know what else would cause this..

 

[rkymtnman]

I’m dont know what else would cause this..

root rot usually causes pH drops

 

[projectinfo]

Do you change your res every week?

Is your source water dirty.... Maybe a uv light may help haha

 

[Dailypunch21]

I do Res changes every week. I’m going to get some h202 and try and clean up the roots to see if that will help. When I do my res changes ph will rise and I have to add a lot ph down but after I add the down to about 6.0 it will never rise again only start dropping a few hours later...

 

[projectinfo]

I do Res changes every week. I’m going to get some h202 and try and clean up the roots to see if that will help. When I do my res changes ph will rise and I have to add a lot ph down but after I add the down to about 6.0 it will never rise again only start dropping a few hours later...

Yeah it helps to use some kind of benny or h202

I used hydroguard last time and it worked great

This time im going to try hygrozyme

 

[rkymtnman]

Yeah it helps to use some kind of benny or h202

I used hydroguard last time and it worked great

This time im going to try hygrozyme

try this instead: southern ag garden friendly fungicide. same strain as hydroguard but a million times stronger and much cheaper.

 

[projectinfo]

try this instead: southern ag garden friendly fungicide. same strain as hydroguard but a million times stronger and much cheaper.

not available in canada, what elese is there?

 

[rkymtnman]

not available in canada, what elese is there?

you can't order off ebay? that sucks.

that is the only product i've used since i stopped running sterile res with HTH pool shock.

 

[projectinfo]

you can't order off ebay? that sucks.

that is the only product i've used since i stopped running sterile res with HTH pool shock.

yeah i looked you cant get it . they wont go cross border.

and now you cant get hydroguard either . anyone know of any alternatives?

 

[fridayfishfry]

I added noob kelp tea to my hydro and my pH dropped to "below 4"

in my case it was the leaf matter in the res

I agree, h2o2 and/or clean that res if you got funk

 

[fridayfishfry]

plants will grow just fine in "below 4" pH water by the way lol
just fine may mean actually not that great and shitty compared to if the pH was correct but they will survive

 

[Mont@n@]

try this instead: southern ag garden friendly fungicide. same strain as hydroguard but a million times stronger and much cheaper.

sorry for the hijack but it works for you?
im having stem rot and the only way to control it is with pool shock or changing res every 3-4days.
i guess i will get some
thanks

 

[rkymtnman]

sorry for the hijack but it works for you?
im having stem rot and the only way to control it is with pool shock or changing res every 3-4days.
i guess i will get some
thanks

yep, it works just as well as a sterile res IMO.

i run waterfarms (2 gal res) and i give them 1mL (way more than needed) once a week

 

[My Name is Mike]

Anyone know why my ph would slowly be dropping after a reseravoir change? Plant seems to be eating and ph will raise but after I correct it, it continues to drop..

What do you use to raise it? I use baking soda as my PH up and it works great to up the PH and stabilize.

It also sounds like you need to mix thoroughly and stabilize before you run the water in your system. I've noticed I had issues when I spiked my water with my cocktail and ran it vs. allowing my water to mix thoroughly, stabilize then hook it up. Just a shot in the dark.

Def take a look at the roots if you can and see what you've got going on.

You may already know this, but in case you don't.... RO water, cal-mag, nutes, PH. Despite your nutes having cal-mag, I'd recommend using some on the side to have a buffer in your water prior to your nutes. My .02

 

[a senile fungus]

How large is your res? How much water is being used after a week before the Res change? You said your pH is around 6.0 after res change, at what EC/ppm? What is the EC/ppm of the solution when you notice that the pH has lowered through out the week?

Thx.

I am wondering if the plants are drinking more water than nutes, which might explain your issue.

 

[projectinfo]

How large is your res? How much water is being used after a week before the Res change? You said your pH is around 6.0 after res change, at what EC/ppm? What is the EC/ppm of the solution when you notice that the pH has lowered through out the week?

Thx.

I am wondering if the plants are drinking more water than nutes, which might explain your issue.

What would be the isse if the planta are drinkin more water than nutes?

Ec too high?