Who Doesn't Change Their Reservoir For Entire Grow?

[CannaCompulsory]

Some people do not change out their h20 in their reservoir for the entire grow, just adjust PH and add to nutrients.
What do you do?
I've not changed and just add to and PH, and cant really tell if res changes do anything except waste more water and expensive nutrients!
Opinions?

 

[ThcInfused]

well i voted never but im a gurrilla grower so
i hike my water to the grow by the 5 gallons

 

[Danks2005]

I never change, just adjust ph, add nutes according to lucas formula, and keep ppms where i want em. I've never had a prob with this.

 

[SaltyBalls]

im thinking of trying never im doing a rdwc this time and it is 80 gals and its alot of expensive nutrients to bring up the ppms i hoping more chime in on this topic

 

[Andyo]

standard practice in proffesional horticulture is to take weekly nutrient analysis samples ,and adjust accordingly not just measure cf n ph >
I did this for 2 consecutive crops in hydroton 1 using hard water straight from the tap and 1 using r/o water, and kept a record sadly this was taken from me during the bust .
The main difference was the biuld up of bicarbonates in the tap water tank and getting to very high levels of nitric acid dosing to tank as i found the bicarbonates biult up in the pots of hydroton as well as in the tank ,to a point where you have to change the tank at 4 weeks or your acid takes the cf figure so high you cannot add nutrients .
Where as with the r/o water the full crop 60 day bloom tank is entirley feasable if not also benificial as many root exudes that get into the tank may be benificial .
I remember

 

[Scrogerman]

I dont care what anyone says, Plants eat elements at different ratio's, how the solution ever gonna be stable if this is the case, Yeah they can take it , they are hardy , but its hardly OPTIMAL- WORD!!!!!!!!!!!!!!!!!!!!!
Peace........Scroger!
FOOLS

 

[FreezerBoy]

I change the water when the plant asks me to. Once or twice in a 20 week grow.

 

[*mistress*]

never!

coco+wick+gh flora nova=never dump run-off|pdg’s imaginary/enjoyable garden
https://www.icmag.com/ic/showthread.php?t=127112

 

[Ms_Weekend]

I just change for veg-12/12flip...then change again at flush.......just keep filling & adding whats necessary

 

[Scrogerman]

Then you guys i wonder what the exact composition of elements in solution is looking like after such a time & whether that is OPTIMUM conditions for our plants i just cant see it, i thought you guys knew a bit about botanical chemistry!!!!!!
A difference in growing systems & styles i do believe!, i'm talking Chem Hydro & recirculating Res's tec. NOT Organic with no run off! My comments relate to what i believe the original poster(Canna Compulsory) was talking about!?(Recirc Res's)

 

[Macster2]

Well I stopped changing my rez water and noticed about a 25% drop in yield.Its the only thing that changed,I even replaced the bulbs thinking that might have been the problem. I'll report after this crop.

 

[Haps]

Have done years of both, no contest here. I get better gals with changes.

 

[globel]

i do weekly changes... some times i do run to waist.. i only use sensi A+b and big bud powder some times add carbo load powder... I run 100 gal res... on a 4x8 ebb flow coco...


I run to waist on my mothers there in 2.5 gal pots with hydroton in 6" blocks..

 

[brain candy]

I change the water when the plant asks me to. Once or twice in a 20 week grow.

How does the plant indicate or "ask" you to change the rez? I'm very interested to know.. New to hydro... Thanks.

 

[Rusty Shaklford]

Every Sunday

Every Sunday

My aeroponics grow gets changed every Sunday along with a new freshly cleaned tub.

 

[CannaCompulsory]

My comments relate to what i believe the original poster(Canna Compulsory) was talking about!?(Recirc Res's)

yup thats what im talkin bout! I have done both, but like I said never can tell a difference, grows seem to do fine in both cases, just felt like I was wasting more h20 than needed with water changes every couple of weeks.
and since my plants stopped talking to me ever since they caught me with a poppy...

 

[CannaCompulsory]

well i voted never but im a gurrilla grower so
i hike my water to the grow by the 5 gallons

think you misted the point of the question ; ) but way to "monkey" with the poll results ThcInfused!!

 

[CannaCompulsory]

I'll report after this crop.

great, will be interesting to find out. I assume your doing changes now?

 

[Classyathome]

My first thought was to go with "bacon"...

But seeing as there is no "bacon" option (really limiting the response spectrum, IMHO), I chose the 2 week change...

My grow partner, Netwerx, rarely does a change, just tops up and adds nutes...

 

[Babbabud]

Once a week. Its the nice fresh water here that works the magic.