Outdoor Gravity Auto-top MDWC in Hawaii- Yes, it can be done

Jahworks

Member
Hey family! I am new to the forum but have been a member of other communities online since Over Grow back in 2002.. Just wanted to share my current grow I am doing. I have some Chocolate Mint OG and Strawberry Banana Kush going. Simple set up really...just a gravity auto top MDWC. They are about 4 weeks flowering right now. Steady root zone temps of about 69 F and they are sitting in 1800ppm at .5 and go through about 1/3 of their water daily. I am doing a test grow with a new Phosphorous solubilizing microbial product and it seems to be working great. Also using H&G Aqua Flakes. Anyways, I'll upload some photos and videos. Happy growing! :weed:

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Jahworks

Member
Give thanks! The 808 is another animal for growing definitely. Just happen to be blessed to be in an area that has the perfect micro-climate for an outdoor hydro without needing chillers and such. Also helps to have been doing outdoor hydro for 7 years. Respect! ;)
 

SPLFreak808

Well-Known Member
Give thanks! The 808 is another animal for growing definitely. Just happen to be blessed to be in an area that has the perfect micro-climate for an outdoor hydro without needing chillers and such. Also helps to have been doing outdoor hydro for 7 years. Respect! ;)
Big island i assume? Those are some nice flowers for sure.

People on oahu have some pretty cool aquaponic setups, always seems to make nice outdoor flower.
 

Jahworks

Member
Hey folks! Wanting to give little update. So the 16 ladies have drank about 90 gallons of water over the last 14 days. I added more water to the control res yesterday. We are sitting at 2300ppm and 5.45 ph to 6.1 in the buckets. I am seeing that they have a small P deficiency. There is STILL not enough available P in the H&G Aqua Flakes to keep them 100%. I added another dose of Bio-Fizz yesterday so we should see in improvement on the purpling of the stems and leaf veins. So far, I am noticing more vigor, crystals and stronger, larger stalks on the plants compared to previous grows with same genetics since I have added the Bio-Fizz. Base of stalks are at about 1.25" across and plants are at 66 days from clone.



We are at 36 days for the Choc Mint OG and 29 days for the Strawberry Banana Kush. I'll upload a pic of the Choc. Mint. You will see some slight tip burn on the leaves. I am having build up of salts since I have not flushed the system for 120 days. So before refilling nutes and control res yesterday, I let them have plain water for about 12 hours. What I am noticing is that no line of nutrients are tailored for an outdoor hydro grow. I have yet to come across a single or two part nutrient line that can keep up with the vigor of an outdoor hydro plant. The just do not have the balance needed in the nute mix. For outdoor hydro, you need more calcium,mg, P and K in a balanced way so that one concentration of one component does not cause lock up or problems for the whole plant. Every nutrient line I have tried seems to leave the plants needing more P and K. And when I raise the ppms to say 2800, they get the right amount but then the high concentration of other nutes are causing burning. I guess I need to come up with my own nute line now... lol.

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