Can you use the same water for an entire hydro gro?*using CAP EBB N FLO*

Does any one know if you can use the same water in a 50gallon drum for your entire gro without changing it? would it be a bad thing? i noticed the water has been sitting for over 2 months now in the drum and i have not started the gro yet, and it stays at the same ph i set it to in the beginning.

Johan said:

Does any one know if you can use the same water in a 50gallon drum for your entire gro without changing it? would it be a bad thing? i noticed the water has been sitting for over 2 months now in the drum and i have not started the gro yet, and it stays at the same ph i set it to in the beginning.

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Do you mean "just water"? Yes.
Do you mean "premixed nutrient"? Yes if draining to waste.
The big hydro greenhouses recirculate nutrient indefinitely, but they also have ways of monitoring ion concentrations and making up the parts the plants used up and not going into imbalance. cn

cannabineer said:

Do you mean "just water"? Yes.
Do you mean "premixed nutrient"? Yes if draining to waste.
The big hydro greenhouses recirculate nutrient indefinitely, but they also have ways of monitoring ion concentrations and making up the parts the plants used up and not going into imbalance. cn

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okay so when i give it veg nutes, after that i need to put new water in to start my flowering nutes, or can i just leave the veg water the way it is and add my flowering nutes to it?

really confused, the CAP ebb and flo circulates between 12 plants from a 55gallon drum, and just need to know if i have to take the water out and put in new water everytime i add nutes? if so that is very tedious

Johan said:

Does any one know if you can use the same water in a 50gallon drum for your entire gro without changing it? would it be a bad thing? i noticed the water has been sitting for over 2 months now in the drum and i have not started the gro yet, and it stays at the same ph i set it to in the beginning.

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as long as the soup is not contaminated and you were say flowering only yes.The key is maintaining the correct PH and ppm.I would suggest using H2O2 to sterilize the soup occasionally.Also if you add some Oxygen to your water(Bubbles which I highly recommend) this could change your PH

Stellah said:

as long as the soup is not contaminated and you were say flowering only yes.The key is maintaining the correct PH and ppm.I would suggest using H2O2 to sterilize the soup occasionally.Also if you add some Oxygen to your water(Bubbles which I highly recommend) this could change your PH

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what do you mean by soup? and i am talking about, starting from seed then going into veg, start veg nutes, then when i see signs of flowering, start its flowering nutes. i do not need to change the water in the 55 gallon drum do i?

dude Johan you need to do some serious reading on this my friend, check it out, first off if you run your plants in veg you shouldnt see any sure signs of flower production until you induce a 12/12 photoperiode. you would definitely need to change the res out from veg nutes to flower nutes because if you try to just "add" flower mixes to a existing veg mix you are going to throw off you N-P-K ratios for flower. now you can run a veg mix for the fist few weeks of flower as the plants are still in a vegative state but once actual flower production starts you are going to want a different mix for that. will it work sure but you will not see the full potential of your plants from your grow. in my cap system i ran a res all the way through flower never changing it out and it worked out ok but you have to think the plants drink the res out fairly quick so you are actually changing out the res every so often anyway. i like changin the res at least every 2 weeks to ensure a clean res, after a while you will start to see some shit at the bottom of the res.

Johan said:

what do you mean by soup? and i am talking about, starting from seed then going into veg, start veg nutes, then when i see signs of flowering, start its flowering nutes. i do not need to change the water in the 55 gallon drum do i?

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soup, AKA a water/nutrient mix.

Johan said:

okay so when i give it veg nutes, after that i need to put new water in to start my flowering nutes, or can i just leave the veg water the way it is and add my flowering nutes to it?

really confused, the CAP ebb and flo circulates between 12 plants from a 55gallon drum, and just need to know if i have to take the water out and put in new water everytime i add nutes? if so that is very tedious

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It is tedious but necessary imo. You're better off mixing only as much nutrient as you need and changing it either on a schedule ... or by need, but this would require some sort of ion-sensing instrumentation.

The crux of hydro is to present the nutrients in enough concentration to feed ... but not enough to burn. That margin is quite narrow. Plants will never feed what you give them in the exact ratio provided, unless you're rather lucky. I changed a 50-liter reservoir weekly when i grew hydro... and pitched the unused nutrient onto the lawn. You'll do much better with a smaller reservoir imo. cn

Just because the res is 55 gal doesn't mean it needs to be ran at that capacity, when running 12 sites I always ran it at the 40 gal mark and would take exactly 4 weeks before needing refilling, could prably be run to the 30 gal mark and run fine would just have to add back more often. There is a cap ebb and grow thread in this forum filled with nothing but ebb and grow users that have fairly mastered this system check it out.

figured i would just get another 55 gallon res for flowering, because it would be impossible to drain it from where i am.