Day 18 update. Growth has been slow but is now finally speeding up. Last watering was 500ml per seedling @ EC 1.3 (Calcium, Magnesium, Coco A+B, Bio Roots, Voodoo Juice) @ pH 5.6.

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Day 27 update.

I couldn't get the temperature down in my grow room, so I bought a S&P TD-500 Silent fan to replace my TD-350. Hopefully this can provide enough airflow to stay under 30°C. I've reconnected everything and set the fan to the lowest of its 3 settings for now.

I've also screwed 4 rails to the walls for supporting my ScrOG net (yet to build).

I watered each plant in their tray with app. 750ml nutrient solution @ EC 1.7 (Calcium, Magnesium, Coco A+B, Bio Roots, Voodoo Juice) & pH 5.7.

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Day 29.

I've connected the aquavalves and filled my reservoir with 20L of solution @ pH 5.8 & EC 1.7.

The temperature is now staying under 30°C :biggrin:
 
Day 30.

I'm pondering how wide I should make my scrog screen. The length is 1.5m. I would like to make it 80cm deep, but don't know if 4 autoflowers can fill it... and I've never done a scrog before :mrgreen:

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Day 30.

I'm pondering how wide I should make my scrog screen. The length is 1.5m. I would like to make it 80cm deep, but don't know if 4 autoflowers can fill it... and I've never done a scrog before :mrgreen:

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I say make as wide as you can and hope to fill it all. I filled a 90x90 screen with just one photo. Would rather have too much screen, than less than you need.
 
Day 32. Preflowers!

I've switched on my 2nd light and set each light to 160W. I've also lowered the lights and raised my plants a bit. They're centered between the lights app. 75cm away.

I've ordered 90° reflectors for my COBs. I feel 120° is wasting light. They should be here in a few days.

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