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Which would produce more DO in a DWC?

Discussion in 'Hydroponics / Aeroponics' started by JSB99, Jul 5, 2017.

    Budley Doright

    Budley Doright Well-Known Member

    I use the bathroom wall foam tile board 5/8" (I think) for my upper tote lids which insulates and is anti fungal, seems to work well. But yes it's nice to have access to the root section ;).
    JSB99 likes this.

    JSB99 Well-Known Member

    Clean up day. Took me 15 minutes to break everything down and take it out back. Really easy! Instead of 2" unions connecting the large pipes (one passing through the tent), I use rubber couplings. The unions are about $13-$14 each. The couplings were only a few bucks.



    rkymtnman likes this.

    rkymtnman Well-Known Member

    so what did you learn? what is staying the same? what is changing?

    i always have a dr phil moment at the end of each grow.
    JSB99 likes this.

    JSB99 Well-Known Member

    Me too :). I've already started planning my adjustments.

    I need more light, so I don't have to supplement with CFLs

    Need to use slime-away. Roots were pretty slimy

    Need to get a 55-gallon HDX tote to use as a reservoir, so I can bubble out chlorine before going into the system. Adding chlorinated water may be killing important microbes.

    Considering a chiller. Problem is, I don't have an adjoining room where I can run it. I'm trying to think of how I can enclose one outside. That, or maybe keep a large tote of water outside, and use a second pump and S.S. wort coils for a heat exchanger. That would be a lot cheaper if it works. I'm only growing in the cooler months where it's usually in the 40s and 50s. Probably have issues with outside temps fluctuating.

    I think that's all I have for now :)
    rkymtnman likes this.
    Budley Doright

    Budley Doright Well-Known Member

    You could use a fan coil outdoors to cool the water if growing in those temps and circulate water through it. I have not had an issue using copper coils that just have res water pumped through them and circulated into res. I should actually test the water before and after a couple of weeks of running for copper level comparison. My underground copper lines use glycol with copper heat exchangers, res water is cycled through them. Using temp controlled pumps.
    JSB99 likes this.

    JSB99 Well-Known Member

    Great idea! I was wondering if something like that would work. I can just get a small radiator and fan, mount it right outside the wall, and enclose it enough to protect it from the elements.

    I've always read not to use copper. Something about the water leeching ions, or something.
    Budley Doright likes this.
    Budley Doright

    Budley Doright Well-Known Member

    Well the PH being low will breakdown copper supposedly and I really need to test it but it has not affected my grow that I'm aware of :(. I wouldn't stick a coil in my res but I know it's been done with no ill effect to plant development. My chiller and one heatexchanger does have coopurnickle coils which doesn't break down.
    JSB99 likes this.

    JSB99 Well-Known Member

    I was just testing the water pressure with, and without, the inline filter. I knew there'd be a difference, but it's much more than I thought. I noticed a flow restrictor in the filter, and I'm wondering if that'd help. It looks like there's a little clip, so hopefully that's all. The white buttons on the side don't do anything, as far as I can tell. I've drilled these out before, but it's messy.

    If the filter keeps being a bottleneck, I'll just remove it. It's really easy to take my pump out and clean the impeller. I do this every few weeks anyways.

    20171129_181142.jpg 20171129_181101.jpg

    JSB99 Well-Known Member

    What I'm thinking is a closed-loop cooler. I'll use a stainless wort coil in the res, and a second pump would cycle it through the radiator outside. Would that be adequate, or should I just cycle the res water through the radiator? If it's better to cycle the soup, would a second smaller pump, to cycle the soup, work better than having a single pump?

    JSB99 Well-Known Member

    I managed 13.6oz/385.5g, which comes out to about .64g/watt. I knew my yield was going to be low because of the strain I was growing. It's a low yielder, and the buds are small. They are tight and sticky as fk, and I have no doubt it's going to be strong, but I'll never grow this strain again. That's one more thing I've taken away from this grow. The SSH grow (cola pics below) yielded 24oz. That was 2 x SSH, which yielded 8oz each, and 2x Trainwreck (I think), which yielded 4oz each. That equates to 1.13g/watt. That was my biggest yield. I know someone asked earlier, but I couldn't recall my numbers at the time.

    I've got Gorilla Cookie beans for my next grow. Got them from a new seed bank in Canada. The user is on RIU, and delivered my order quickly! He's got a good selection and great prices! He's in the process of posting his site, but I'll give him props here. @legalcanada Check him out! Message him about products and prices.

    zypheruk likes this.

    JSB99 Well-Known Member

    After I finished cleaning and sterilizing, I began working on tuning and upgrades. I'm calling this "Phase-2" :) I've got at least another month before I'll have anything to put into the tent. Right how, I'm working on my baby mommas. That is, baby Bonsai Mums. I've got four growing from seed (Girl Scout Crack (Seedsman), Gorilla Cookies (Expert Seeds), White Widow, and some kind of Kush called "Special Kush #1", though there's no history of it on Leafly). Two have sprouted, and the other two are being slow. After I've grown them big enough to be topped, I'll take some cuttings from one of them, and grow them out. But, I've got more than enough to last me, so I'm not in a big rush.

    Here are some of the things I've done (in no particular order):
    • Painted tote lids black and made modifications
    • Removed the 90 degree elbow, on the 3/4" return hose
    • Built a frame, from PVC pipe, to keep the tent's roof poles from sliding around
    • Relocated the carbon scrubber
    • Painted four, 2-gallon buckets and lids, that I'm going to use for early-veg
    • Added 55-gallon reservoir
    Baby Mums.jpg

    Painted tote lids black and made modifications
    • Enlarged the netpot holes on the tote lid and got heavy duty netpots
    • Cut access squares in the tote lids, to be able to peek into the totes without having to lift the lids. Also created lids.
    • Painted lids black using Plasti-Dip spray paint. Sprayed four or five coats on the mini buckets and the tote lids. Letting everything cure for a couple weeks before I start handling them. Lids are totally blacked-out now.
    tote lids001.jpg tote lids002.jpg

    Removed the 90 degree elbow, on the 3/4" return hose.

    I saw this as a potential bottleneck, so I shortened the tube, cut another hole in the tent which would allow the tube to gently curve to where in connects to the pump's intake manifold.
    black return tube001.jpg black return tube002.jpg black return tube003.jpg

    Built a frame, from PVC pipe, to keep the tent's roof poles from sliding around and relocated the carbon scrubber, since the new poles allowed for more places to hang it from. It's just in the center now.
    tent ceiling frame.jpg

    Painted four, 2-gallon buckets and lids, that I'm going to use for early-veg.
    I'm going to lay a board across the top of the totes, and put the buckets on top. This way, I can get the plants real close to the center. I'll just move them to the totes by their netpots, when they're big enough. The buckets will each have an air stone, but the buckets are independent from each other.
    mini buckets001.jpg
    Last edited: Dec 16, 2017 at 7:13 PM

    JSB99 Well-Known Member

    55-Gallon Reservoir
    res under table.jpg
    Fits perfectly beneath the 6ft table. Not sure if I'm going to leave the lid on, as I'm going to be bubbling out chlorine.
    res under table-perfect fit.jpg
    The valve is kind of tucked away back there, but I won't need to get to it much
    res pipes behind table legs.jpg
    • Added water line feed and float valve to reservoir
    • Added an overflow pipe to the reservoir
    • Added a bulkhead and tube to the reservoir. A 1/2" tube goes to the new valve on the pump's intake manifold.
    The overflow has a mini PVC p-trap
    res back pipes002.jpg

    Float valve on the right, and overflow on the left. Overflow drains outside.

    res inside pipes.jpg
    • Removed the inline filter. This was really reducing the flow. I blame that more on having an undersized pump, and I left the manifold in a way that allows me to put it back in place once I get a more powerful pump.Added a 55-gallon reservoir. I went with an HDX 55-gallon tote, and not a barrel. The tote fits perfectly under the table, and it was way less expensive. The barrel is better suited for holding that much water, because of it's round shape, and the tote is flexing as it gets filled up. But I'm not giving up on it. I've got some metal pipes that I'm going to use as a frame, around the mid-section of the tote, to prevent the sides from bowing out.
    • Added a side-chain and valve to the pump's intake manifold. Yep, added another valve. Didn't think I had enough yet LOL! What this valve allows me to do is use the pump to draw the water from the res, by closing the very first valve that has the 3/4" tube connected to it. I can also drain the reservoir by closing the valve to the waterfall, and opening the drain valve. My goal was to use a single pump for everything.
    side-chain001.jpg side-chain002.jpg side-chain003.jpg
    Last edited: Dec 16, 2017 at 7:22 PM
    zypheruk likes this.
    Budley Doright

    Budley Doright Well-Known Member

    U could use a ratchet strap around the tote to stop flexing I would think if it's that bad, never had that issue. Also I painted my totes black as well but found the things added a lot of heat being black so changed to high density foam wall board used in bathroom walls and before that covered them with reflective bubble wrap. With the chiller or loop running I haven't worried about res temps. Looks amazing though ;).
    zypheruk likes this.

    zypheruk Well-Known Member

    Paint totes etc white so as to reflect light and heat. Or as Budley Doright has suggested.

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