i have both. while the catalina is pretty damn good, i still prefer my tek's. personal bias maybe, but they just "appear" so much brighter to me. both do just fine growing plants, so it up to you. teks dont come with bulbs so you would need to purchase those separately unless you buy them as a bundled set. but you at least still get to choose the bulbs. my 2.5 year old giesmanns are still going strong, and you wont be dissapointed with them.
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