For All Cap Ebb and Grow Users

[hellraizer30]

So are you just topping off with water, or are you adding nutes + water?

my water start at 1300ppm 55gal first top of at 15gal put at 1200ppm and so on and so forth. im at 900ppm today and im at 35gal in the res.
and doing a res change I got 7 days out of a res. so just water

 

[horsepower850]

What kind of water use rates is everyone seeing with this system? I am having to add damn near 5 gallons of H2O per day for a 16 bucket grow that was flipped to 12/12 a week ago. If you follow the Lucas rule of draining and refilling your res once you have added back 50% of your starting volume of fresh water, I would have to drain, clean and refill every 4 days (only filling the res to 40 gallons)!! That seems excessive. The other Lucas method requires the topping fraction to be full strengh nute solution, and you can get by with this method without draining the res for a few weeks. My issue is with the nutrient ratios being all over the place with both of these methods. I dont want to have to deal with synergism/antagonism that can cause false deficiency/false toxicity symptoms.

What is everyone else doing/seeing?

My system has 36 sites and are in week 8 and they are drinking more than 10 gal per day. Throughout the entire cycle I change my res water every week. From about week 1 in flowering I would have add about 75% water half way through the week. I just monitered my PPM and kept it at a certain level according to my nutrient feed chart and I added accordingly per the amout of water I added. It seemed to work pretty well although now I'm starting to show some burning of leaves signs most likely due to shooting powder i'm using. It's ok. They are just about finished and won't matter cause of great trim jobs.

 

[hellraizer30]

My system has 36 sites and are in week 8 and they are drinking more than 10 gal per day. Throughout the entire cycle I change my res water every week. From about week 1 in flowering I would have add about 75% water half way through the week. I just monitered my PPM and kept it at a certain level according to my nutrient feed chart and I added accordingly per the amout of water I added. It seemed to work pretty well although now I'm starting to show some burning of leaves signs most likely due to shooting powder i'm using. It's ok. They are just about finished and won't matter cause of great trim jobs.

i just let my ppm drop off though the week as I add water and add only if it get bellow 900ppm and at that point im doing a full res change anyhow. and so far Im never geting a burn of anykind.

 

[Ferredoxin]

i just let my ppm drop off though the week as I add water and add only if it get bellow 900ppm and at that point im doing a full res change anyhow. and so far Im never geting a burn of anykind.

What EC does that 900ppm reading come out to be? Because for me, 1300ppms would be about a 2.5 EC, and 900 ppms would be just under 2 (conversion factor of 500). On the Lucas formula, when I add 8ml/gal of Micro and 16ml/gal of Bloom it lands me at 1040ppm or an EC just over 2. My tapwater is about 0.4 EC, or 200 ppms, which leaves me with an actual nutrient EC/PPM of 1.7/840.

 

[hellraizer30]

to tell you the truth im not up on the ec convertion stuff, I use a blue labs trunchion pen and its goes x2 seting one is EC .500 or 500 and that the one i use at 1300ppm
but on the EC .700 or 700 it is like 1900ppm not sure if that helps

 

[hellraizer30]

What EC does that 900ppm reading come out to be? Because for me, 1300ppms would be about a 2.5 EC, and 900 ppms would be just under 2 (conversion factor of 500). On the Lucas formula, when I add 8ml/gal of Micro and 16ml/gal of Bloom it lands me at 1040ppm or an EC just over 2. My tapwater is about 0.4 EC, or 200 ppms, which leaves me with an actual nutrient EC/PPM of 1.7/840.

ok sorry ferredoxin I have the skinny on what you asked I post rong and im sorry for that
my bluelab truncheon meter 1300ppm is a EC 2.6 on the ECx500 side and on ECx700 CF is ppm of 1820
I use the EC 2.6 for 1300ppm sorry for the mix up Im still learning this shit to lol

 

[gamebreaker81]

Hi guys I got a stupid question for ya. Can I use a smaller resevoir then the 55 gallon that comes with the CAP? I am gonna have 9 plants using the cap system just wondering if I could get away with using a 23 gallon rezzy? Thanks

 

[hellraizer30]

Hi guys I got a stupid question for ya. Can I use a smaller resevoir then the 55 gallon that comes with the CAP? I am gonna have 9 plants using the cap system just wondering if I could get away with using a 23 gallon rezzy? Thanks

for 9 you could but you would be doing adding back water alot. now I can tell you this my 55 gal res with 30 gal in it will flood 29 bucket for one day thats x3 floods
and there in week 4 of flower

 

[gamebreaker81]

Thanks buddy my room is small 4x6 dont have room for a giant reservoir. I was gonna use a rubbermaid slim jim doesnt take up much room at all.

 

[hellraizer30]

Thanks buddy my room is small 4x6 dont have room for a giant reservoir. I was gonna use a rubbermaid slim jim doesnt take up much room at all.

watch cheap plastics made from CPVC give off a gas when chemacals come in contact

 

[horsepower850]

Ok. Sounds like I'm pushin them too hard at the end. I'll just follow a method like these next time. I'm just gonna flush them with fresh water to keep more burn from spreading. These are done at the end of this week anyway. Thanks for the insight.

 

[hellraizer30]

who do we talk to to get this stickyed?

 

[hellraizer30]

dam checked on my res today and 24 buckets 4 1/2 weeks into flower and my res was toped at 55gal and today it was 20gals low
and the ppm went from 1300 to 1900. I added back water and got 1300ppm again but dam thats alot of water!!! for one day, any
coments?

 

[i81two]

Do you have a leak ?

 

[MoJobud]

Wait you saying you went through 20 gallons in 1 day for 24 plants?

 

[hellraizer30]

yep 20 gals maybe a hair less, and no leaks anywhere

yah it breaks down to alittle less than a gal a plant, now im like wtf

 

[legallyflying]

a gallon per plant doesn't seem outrageous to me. If your low humidity and high heat you should expect it. I have a 25 gallon top of tank on my rez and filled it up this weekend. I think it was sunday. Anyways, I went down to the space last night and I can hear the airstone in there. I opened it up and it there was like an 1" of water in there. So that was 25 gallons for 12 plants over 2 days.

To the above poster looking for a 25 gallon rez. Go to home depot and try to snag one of these... they are tough as shit and don't flex at all. They are money!!!
http://www.homedepot.com/h_d1/N-5yc1v/R-202328879/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053

 

[hellraizer30]

a gallon per plant doesn't seem outrageous to me. If your low humidity and high heat you should expect it. I have a 25 gallon top of tank on my rez and filled it up this weekend. I think it was sunday. Anyways, I went down to the space last night and I can hear the airstone in there. I opened it up and it there was like an 1" of water in there. So that was 25 gallons for 12 plants over 2 days.

To the above poster looking for a 25 gallon rez. Go to home depot and try to snag one of these... they are tough as shit and don't flex at all. They are money!!!
http://www.homedepot.com/h_d1/N-5yc1v/R-202328879/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053

48% humidity and a high of 72 and never higher so id say my hum isnt low and temps are perfect and plant look awsome

 

[legallyflying]

Hello,
I made a homemade flood and drain system (EBB) hydroponic system for growing cannabis. There is a reservoir at the bottom with a pump and the nutrients solution. It gets pumped to the growing bin exactly above. I used a bell siphon that kicks on after the growing container fills past the siphon. It fills the growing bin about every 3 minutes, I am going to use hydroton as my growing medium next time, in the pic I used black cinder, which also works well. I love this system because it works great and I made it for about $50. You can check out the pic here Hydroponics Weed !

Ask any questions if you have any I would love to help.
Adam Price,
WeedIndoors.com

Wow that seems really neat; NOT.
. now burn in hell spammer!!!

 

[legallyflying]

No, that doesn't seem extreme. I'm at 38% humidty, well 38-41% over the course of 24 hours and my temps are in the low 80's. I'm 7th week of flower though.

I think there is a picture in my grow thread (and recent bud porn) but I can't overemphasize how fucking totally awesome a top off tank is. PPM stays rock solid, the tank helps keep the rez cooler (cause its not going back and forth through that hot ass black tubing), and you never half to worry that your shit is going to run dry or PPM's spike.

I built mine about a month ago. Left for 5 a day vacation. 1010 PPM and 5.7 when I left.... 980 ppm and 5.8 when I got back.