The 21st was the first full 12/12 cycle, I transplanted my MVP Mazar-Sharif into a modified 5 gallon bucket yesterday morning right after the lights came on.
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I also switched out the light to the Hortalux 1000 watt HPS, but had to switch back to the 400 watt MH due to the heat. I experimented with my exhaust fans to try and deal with the heat by pulling the hood exhaust from outside the growroom and brought in another fan to exhaust the room. I even took down two of my roof A/C vents and attached vent hose to them to bring the cold air directly from the A/C system into the growroom. I also experimented with the fan exhausting the room(on/off, to keep the cool air in) once I brought the A/C cooled air into the room. All to no avail the coolest I could get the room was 84-86 degrees(with the A/C running hard).

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So.... I ordered a Plantmax 360 Conversion HPS to use with the 400 watt MH ballast.

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I found mixed reviews online and the Hortalux is 5 to 6 times more expensive. I know you get what you pay for but damn...If anyone out there has first hand knowledge of this product I would like to hear it. If not stay tuned.