ph going down in d.w.c

[khyberkitsune]

This happens quite often with rock wool and hydroton. Rich nutrient solutions will cause buildup and you have to flush the salts out. It's just one of the few downsides to a hydroponic system, though it does happen in soil as well, it does not occur nearly as often.

[garrath]

well ill keep flushing it as i am . but it was good thinking with the salt but all ties in now of the pots i have some had ph of 5.5 some down to 4.7 but all of them all over the place made my heed bad lol.


well if i have a plant in coco and i need to flush salts out can i do a flush with the plant in the pot and give it a feed the next day or will this slow the plants down a lot and if you grow in coco do u use any thing to feed your micro heard ?in the coco or is this just a soil thing
just thinking of adding something if you have any ideas like molasses or something from the hydro shop
lol by time i get out of the plants ill o it to you for all the help well thanx man


10 4 over and out

[macnasty]

i'm confused. is your ph going down in your dwc or in your coco grow?

some ideas as to why your ph may be dropping but nothing definitive:

1) you're over feeding your plants. if there is too much food in your res, the plants will drink a greater proportion of water to food ratio, thus increasing your ph as there will be a higher concentration of food to water present in your solution.

2) salt build up. as you know, the salt buildup (crusty white stuff) can greatly increase your ph levels. this can occur if you are using a coco coir that possessed salt buildup (the coconut husks come from tropical places that are sometimes left on the shores for extended period of time and absorb sea salt). you may need to flush your coir next time to avoid this problem.

3) if you're room temps are too high the water will evaporate quicker and increase the concentration of food to your plants. generally, when the temps are higher you may need to add a water feed more often than when they are lower. eg. food, water, food instead of food, food, water.

[garrath]

thats ok i confuse my self iv got coco and dwc in same room
think iv got the dwc sorted now but still geting crazy ph from my coco .

so im flushing the coco is the run off to be at the same ph as the water im puting in ??
or is it just round the same give or take a bit ?

iv now put 30 ltrs of ph flush water in the coco pots im in 10 ltr pots but some of the pots r still coming out at ph of 4.8 and 5 .. 5.5 going in with a bit of cannazym
or am i ment to b putting say ph of 6 in to the 4.8 pot to bump it up ??any help
or im i going to have to get new coco

thanx all