Sterl Lighting F39T5/865/HO Linear Fluorescent Light Bulb, 8 Pack 110/220V 39W 34 Inch 3100Lm, G5 Bi-Pin Base Daylight 6500K

After a very long search for replacement bulbs for my SunBlaster 3' ballasts that had the right color temp and brightness for plant growth, I came across these. While I can't yet attest to their longevity, I did use a light meter to test their brightness vs. my SunBlaster T5HO bulbs - and they're actually brighter! The color temp looks correct as well. They fit into my 3' ballast perfectly. Please keep making these - this size of grow bulb is so hard to find!

They work.

The product is as described; the packaging was excellent...I had my doubts about the condition of the bulbs on arrival, but my doubts were unwarranted, as they obviously know how to ship fragile items. Too soon to comment on the quality of the merchandise - I won't be using all of them at once, as I'm using them for aquarium lighting and I don't need to use them all right now - but I have no reason to expect disappointment there, either. The price is unbeatable.

At the time I purchased, this product had only one review and it was five star, I was little skeptic, but today I be happy to join that one person before me. All eight tubes arrive in good condition, all specification are as advertised. thank you. p/s Baby plants are happy too.

I use these bulbs in combination with blue and red bulbs for my planted aquarium. The bulbs natural daylight provides for an optimal photosynthesis and brings out the plants’ true colors.

very quick to ship and good quality , just not for saltwater aquariums !

Bulbs were inexpensive and work well.

These work perfectly and were priced right.