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Re: [APD] lightning
Quoting Roeland Grommen <roeland_grommen at UGent.be>:
> The fluorescent tubes (2 x 30 W) above my 60 liter aquarium are about 2
> years old and it is about time to change them. At this moment I use a
> Dennerle TROCAL plant and a Gro-Lux from Sylvania. I had quite good results
> with this comibation in the past, but since the Dennerle tubes are quite
> expensive compared to the Sylvania tubes, I would like to ask if somebody
> has any experience with combining Gro-Lux with a Daylightstar from Sylvania?
> Best regards,
What will probably help your growth most is changing the bulbs more often.
Fluorescent bulbs will burn for years, but their intensity drops drastically
over time. Even though you can't tell the difference, the plants can. Most
people recommend changing bulbs every 6 months, IMO you can push them a little
longer (and probably will by accident... kind of like an oil change). As for
the difference between those two bulbs, I have never used either. I imagine
you will probably notice a big difference despite which one you use just
because you will have a fresh bulb. If the one is less expensive and will
allow you to change the lamps more often, I would use that one. If you buy one
that is so expensive that you try to use it forever to "get your moneys
worth", it will probably do more harm than good.
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