SIP thread -- (Sub-Irrigated Planter)

GenericEnigma

Well-Known Member
Im finding the black plastic works well,you can keep adding soil way above the edge too,kinda volcano ish.lol.
I just did this.

Scratched in 3/4 cup of 4-4-4 and 1/2 gallon of shredded, flowering alfalfa across the top of each planter. Then spread a gallon of compost across the top of each, packed them a bit, and covered them back up with plastic. Changed the light schedule to 12/12.

Volcanoes! You're such a stoner. :eyesmoke:
 

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Smscreations

Well-Known Member
20220928_223453.jpg20220928_222708.jpg20220928_222722.jpg20220928_222734.jpg20220928_232656.jpgJust SIPing along. 6 days into my flip and things are running real smooth now. I stopped using LABs in the rezs and I believe I have corrected the issues I was having. Rezs have stayed fairly clean and got healthy white roots down in the water now. The roots looked like they were dying a little bit whenever they touched the water with my homemade LABs in it. Flushed the rezs out and changed with fresh water w/o LABs and plants really recovered quickly.
 

Smscreations

Well-Known Member
I feel like it's mg def., especially since I use ro water, but yea I'll check it out. I remember reading his post before, but I didn't know what the problem was.
Honestly I'm not sure what my issue was either as I had quite a few things going wrong at once lol. My rezs were smelling like a fish tank, my humidity was too low for my Temps, and lights were too close. My soil seemed to be too hot initially as well. I have since got my temp and humidity stable and lined up with proper VPD, raised my lights, and stopped using LABs in my rezs. I also did some foliar epsom sprays all at the same time. I never decreased my amount of topdressings just stuck with Build a Soils recommended schedule and they pulled thru right before I switched to flower. They are doing wonderful now however.

20221004_222305.jpg20221004_082238.jpg

This was at about 10 days from the flip and they exploded with growth.

The faint yellow between the veins looks like it may need a lil mag but ik no expert on deficiencies yet. What's your Temps/humidity and feeding like? What kinda water are you using to fill the rez?
 

Hollatchaboy

Well-Known Member
Honestly I'm not sure what my issue was either as I had quite a few things going wrong at once lol. My rezs were smelling like a fish tank, my humidity was too low for my Temps, and lights were too close. My soil seemed to be too hot initially as well. I have since got my temp and humidity stable and lined up with proper VPD, raised my lights, and stopped using LABs in my rezs. I also did some foliar epsom sprays all at the same time. I never decreased my amount of topdressings just stuck with Build a Soils recommended schedule and they pulled thru right before I switched to flower. They are doing wonderful now however.

View attachment 5209076View attachment 5209077

This was at about 10 days from the flip and they exploded with growth.

The faint yellow between the veins looks like it may need a lil mag but ik no expert on deficiencies yet. What's your Temps/humidity and feeding like? What kinda water are you using to fill the rez?
Temps right now are ~77, humidity ~60%, I just transplanted a couple weeks ago into 3 round no till, haven't top dressed yet, and I use ro water in the res.
 

Smscreations

Well-Known Member
Temps right now are ~77, humidity ~60%, I just transplanted a couple weeks ago into 3 round no till, haven't top dressed yet, and I use ro water in the res.
Okay cool VPD is pretty close to where it needs to be. Did you transplant into same soil as started in? Did you have the issues before you transplanted? With the use of RO water I'm leaning more towards needing at least an epsom foliar. What are you using for topdressing?
 

Hollatchaboy

Well-Known Member
Okay cool VPD is pretty close to where it needs to be. Did you transplant into same soil as started in? Did you have the issues before you transplanted? With the use of RO water I'm leaning more towards needing at least an epsom foliar. What are you using for topdressing?
I start in happy frog. It hasn't given me a problem in the past. I thought I had tip burn from a ferment, but now I'm not thinking that was it. I've epsom foliar past 2 days. I use craft blend and ewc in veg and build a flower in flower.
 

Smscreations

Well-Known Member
I start in happy frog. It hasn't given me a problem in the past. I thought I had tip burn from a ferment, but now I'm not thinking that was it. I've epsom foliar past 2 days. I use craft blend and ewc in veg and build a flower in flower.
Yea I start in happy frog as well. Past couple grows of being in living soil I've had tip burn during veg and I was just attributing that to my living soil being a little hot. As veg would go on and into flower, the tip burn would stop. I use the craft blend and buildaflower as well and havent had any issues with it so far. Hopefully the epsom foliar keeps the lightening of the leaves from progressing any further. Keep a watch on them and keep us updated!! Maybe somebody with a little more knowledge will chime in and add to my recommendations.
 

Hollatchaboy

Well-Known Member
Yea I start in happy frog as well. Past couple grows of being in living soil I've had tip burn during veg and I was just attributing that to my living soil being a little hot. As veg would go on and into flower, the tip burn would stop. I use the craft blend and buildaflower as well and havent had any issues with it so far. Hopefully the epsom foliar keeps the lightening of the leaves from progressing any further. Keep a watch on them and keep us updated!! Maybe somebody with a little more knowledge will chime in and add to my recommendations.
Good lookin out man.
 

Jcue81

Well-Known Member
What’s the pro move for a fungus gnat infestation in a SIP? My top layer of soil is pretty dry. Should I remove the mulch cover to let it dry out more? Aim a fan at the soil surface?

ive seen people suggest malted barley, but I have no idea how that would work.

also considering removing the top 1.5” of soil and replacing with fresh casting

also considering really taping the top shut. Do the adults NEED to leave the soil? Like, if I prevent them from coming and going would that help?

I have microbelift I could add to my water in the res, but not sure if that bacteria can move through the whole soil profile up to the top.

trying not to drop $40 on nematodes, but I will if needed

thanks guys
 

GenericEnigma

Well-Known Member
What’s the pro move for a fungus gnat infestation in a SIP? My top layer of soil is pretty dry. Should I remove the mulch cover to let it dry out more? Aim a fan at the soil surface?

ive seen people suggest malted barley, but I have no idea how that would work.

also considering removing the top 1.5” of soil and replacing with fresh casting

also considering really taping the top shut. Do the adults NEED to leave the soil? Like, if I prevent them from coming and going would that help?

I have microbelift I could add to my water in the res, but not sure if that bacteria can move through the whole soil profile up to the top.

trying not to drop $40 on nematodes, but I will if needed

thanks guys
I use a multi-pronged approach.

I use EWC to keep hypoapsis miles in my pots. I cover the soil with plastic (for moisture retention and gnat discouragement). I kill the gnats manually when I see them. And if they get out of hand, I use BTi (Mosquito Bits). Lots of us use yellow sticky traps as well.

I have found it impossible to be rid of all fungus gnats. But I can keep it down to a few fliers with this method (and having some around keeps my hypoapsis miles going).
 
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