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MannyBoy · 10-24-2009, 01:15 PM

Finished the cabinet - sorry, I still cannot find the camera!. Some light leakage through joints I am filling. Also some leaks around the doors, I think I need thicker sealing material (I used 1/4" D shaped foam rubber). And much more light than I like comes through the 4" exhaust at the top of the cab. in the dark. Inside I have about 4 90 degree turns and an inline fan (90 CFM). Any ideas to help here I would love to know. Last, the fan is much louder than I anticipated. Now I am dealing with this by using a timer to only run it on off hours. Perhaps a long term solution is to use a dimmer switch to dial back the fan speed to hush the noise a bit I hope.

I germinated 10 seeds with the paper towel method. 10 popped after 48 hours all with 1" to 1 1/2" roots. Placed each into a 1" diameter round rock wool "cube". Each cube was watered with rain water I corrected to a pH of 5.8 before I added it to the cubes.

As a side note here, I really struggled with the pH of the water and the rock wool. I had purchased a brand new $25 pH meter from a local hardware store. It read around 7.0 for the straight rain water I collected. I added lemon juice to about a gallon of water checking after adding the juice of one lemon. After adding like 3 lemons worth of juice to this 1 gallon of water the pH would not fall below 6.0. I even added a little food grade vinegar. No change. I returned the meter and bought a scientifically accurate Milwaukee pH600 meter (ironically $25 even with shipping) . I checked my 1 gallon solution above - 2.8 pH! Short story, don't waste your time with a cheepo local meter. It's not cheep or accurate!

Back to the grow. I still have all 10 seedlings growing. All under just the 45 Watt LED light only. The seedlings are all approximately 1" tall with the second leaf sets just emerging.

Two questions. I read somewhere that the rock wool cubes raise the pH 1 point and the optimal pH is 5.3ish. Therefore, I am adjusting my watering water to 4.3 (with Citric acid). Right? Second, when do I think about moving the seedings to the deep water culture set up?

10-24-2009, 01:15 PM	#18 (permalink)
MannyBoy YaHookan Join Date: Sep 2009 Posts: 58 Thanks: 20 Thanked 16 Times in 10 Posts	Finished the cabinet - sorry, I still cannot find the camera!. Some light leakage through joints I am filling. Also some leaks around the doors, I think I need thicker sealing material (I used 1/4" D shaped foam rubber). And much more light than I like comes through the 4" exhaust at the top of the cab. in the dark. Inside I have about 4 90 degree turns and an inline fan (90 CFM). Any ideas to help here I would love to know. Last, the fan is much louder than I anticipated. Now I am dealing with this by using a timer to only run it on off hours. Perhaps a long term solution is to use a dimmer switch to dial back the fan speed to hush the noise a bit I hope. I germinated 10 seeds with the paper towel method. 10 popped after 48 hours all with 1" to 1 1/2" roots. Placed each into a 1" diameter round rock wool "cube". Each cube was watered with rain water I corrected to a pH of 5.8 before I added it to the cubes. As a side note here, I really struggled with the pH of the water and the rock wool. I had purchased a brand new $25 pH meter from a local hardware store. It read around 7.0 for the straight rain water I collected. I added lemon juice to about a gallon of water checking after adding the juice of one lemon. After adding like 3 lemons worth of juice to this 1 gallon of water the pH would not fall below 6.0. I even added a little food grade vinegar. No change. I returned the meter and bought a scientifically accurate Milwaukee pH600 meter (ironically $25 even with shipping) . I checked my 1 gallon solution above - 2.8 pH! Short story, don't waste your time with a cheepo local meter. It's not cheep or accurate! Back to the grow. I still have all 10 seedlings growing. All under just the 45 Watt LED light only. The seedlings are all approximately 1" tall with the second leaf sets just emerging. Two questions. I read somewhere that the rock wool cubes raise the pH 1 point and the optimal pH is 5.3ish. Therefore, I am adjusting my watering water to 4.3 (with Citric acid). Right? Second, when do I think about moving the seedings to the deep water culture set up?