Water usage per 4 x 4 per day. How much?

Keesje

Keesje

Well-Known Member
I'm trying to research a little bit how much water your plants consume per day per 4 x 4.
I'm doing some calculations for reservoirs and for a dehumidifier.
So I am very curious about the experiences of growers here of how much water is consumed when the plants are at their peak of evaporation.
 
.Smoke

.Smoke

Well-Known Member
Depending on #/ size, I'd plan 2 gallons per plant at least to be on the safe side.
Hempy buckets (drain to waste)
@ peak = 1.5-2.0 gallons per day on average for these...
20200804_033218.jpg
20200512_022732.jpg
 
Renfro

Renfro

Well-Known Member
Evaporative losses can make a big difference. So the type of setup used will dictate, to a larger degree, how much water you will pump into the air.

When I ran flood and drain I noticed that each light (4x4) drank about 5 gallons a day. Thats what I had to add back to the reservoir to maintain. Of course the flood and drain system has high evaporative losses. That was the last time I ran for any period without a float top off. I can say that a lot of evaporative losses had the be happening because with my top feed soiless trees I am only giving say 2 gallons a day for a 4x4. lol
 
Keesje

Keesje

Well-Known Member
.Smoke said:
Depending on #/ size, I'd plan 2 gallons per plant at least to be on the safe side.
Hempy buckets (drain to waste)
@ peak = 1.5-2.0 gallons per day on average for these...
Click to expand...
Seems there are 3 of those on 4 x 4?
So about 4.5 to 6 gallons a day at peak?

Renfro said:
When I ran flood and drain I noticed that each light (4x4) drank about 5 gallons a day. Thats what I had to add back to the reservoir to maintain. Of course the flood and drain system has high evaporative losses.
Click to expand...
I assume this is not only evaporation that took place through the leaves, but also evaporation of the water in the open tray?

Renfro said:
I can say that a lot of evaporative losses had the be happening because with my top feed soiless trees I am only giving say 2 gallons a day for a 4x4.
Click to expand...
That is not a lot on 4 x 4!
 
fragileassassin

fragileassassin

Well-Known Member
nah a bit bigger just saying for reference. I run rdwc. 6x 17 gallon totes. probably a 4x8 canopy usually.
mostly plants drinking. I run 80-82F under LEDs and usually around 70% humidity until toward the end. Usually run a heater and evaporative humidifier to keep them both up.
Flower system sits around 60 gallons and has nearly unnoticeable evaporative loss over a week while the humidifier is going.
Through the first half of flower they pretty regularly drink down my 55 gallon auto top off barrel.
 
Keesje

Keesje

Well-Known Member
fragileassassin said:
nah a bit bigger just saying for reference. I run rdwc. 6x 17 gallon totes. probably a 4x8 canopy usually.
mostly plants drinking. I run 80-82F under LEDs and usually around 70% humidity until toward the end. Usually run a heater and evaporative humidifier to keep them both up.
Flower system sits around 60 gallons and has nearly unnoticeable evaporative loss over a week while the humidifier is going.
Through the first half of flower they pretty regularly drink down my 55 gallon auto top off barrel.
Click to expand...
So what do you think they will drink at the peak on a 4 x 4 per day?
 
Gond00s

Gond00s

Well-Known Member
i think i use around 30 galls a week or something around,canopy is filling a 5x5 area so its going up just about everyday in water consumption
 
P

petedavid

Member
I have seen 1m2, fully scrogged, Flood'n'drain, drink 40L in a week. But I am still learning and my results are often lower, maybe 20L a week for 1m2 (3" x 3").
 
Keesje

Keesje

Well-Known Member
petedavid said:
I have seen 1m2, fully scrogged, Flood'n'drain, drink 40L in a week.
Click to expand...
If you would compare this to a 4 x 4 then it would be 40 liter x 1.44 = almost 58 liter.
58 liter divided by 7 days = around 8.3 liters per day. 2.2 gallons per day.
 
KK26

KK26

Well-Known Member
5 plants in soil/coco in a 4 x 4 and I get through around 20ltrs every 3rd day

5 weeks in flower by the way
 
KK26

KK26

Well-Known Member
Keesje said:
So that is about 7 liters (or little less then 2 gallons) per day.
Curious what they will do at their peak.
Thanks!
Click to expand...
They could be heading to 5ltrs every 3 days as I'm getting very little to no run off with 4ltrs
 
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