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Discussion Starter · #1 ·
This is a bit of a silly question. I bought a custom-made Catalina fixture a few years ago, and it is high time to change the bulbs. I can't for the life of me remember if this was a HO fixture or not. I think it is, but I have Giesemann Powerchrome T5 bulbs in there, and they don't say anything about being HO. But I do seem to remember that all Giesemann bulbs are HO. Can someone confirm that? The German website only shows the bulbs that I have. Says nothing about NO/HO
 

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Carpe Diem
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As far as I know they are all HO. You can tell by checking the wattage, ie, 36" are 39w.

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I think so too. Was not very happy with those bulbs and how long they lasted. They do well, just not for long it seems.
 

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Discussion Starter · #5 ·
Thanks so much, guys!

I've been pretty happy with mine as well. I am replacing mine after over two years. I should have done it earlier of course - colors and output aren't ideal anymore - but they did well for a pretty long time.
 

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I had mine a little over a year (5000k) and noticed plant growth seemed to slow. Decided to change my bulbs out and my plants took off. The previous bulbs before them lasted over two years.
 

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Carpe Diem
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I had 2 duds so far. One burned out within 5 mins and I just found one that is barely dim after 6 months.

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