HPS
Magnetic ballasts are the tried, true, and less expensive option for grow light ballasts. They come wattage specific i.e., 1000w, 600w, 400w, etc... (not dimmable), and can either run high pressure sodium (HPS), metal halide (MH), or both depending on their specifications--switchable ballasts can run both HPS and MH bulbs.
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SGLite 600w Convertible Ballast
$98.67MSRP:$118.40 -
PowerHouse Conv Aluminum 1000W (Sod/Hal)
$178.46MSRP:$209.95 -
EP BG 120/240V HPS/MH Ballast - 1000w
$117.46MSRP:$149.95 -
EP BG 120/240V HPS Ballast - 600w
$89.76
MSRP:$149.95
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Commercial Greenhouse -- 1000w HPS Ballast
$214.39MSRP:$266.95 -
Crop Master Sun System 10 -- 1000w HPS Ballast
$147.55MSRP:$174.95 -
Harvest Pro Ballasts -- 1000w HPS Ballast
$156.38MSRP:$182.95 -
Harvest Pro Elite Ballasts -- 1000w HPS Ballast
$171.51MSRP:$202.95
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