Use screw in fluorescent bulbs?

[chvojka]

Can the 6500k screw in bulbs that are so popular now be used?
or would there not be enough penetration?

[Tang Salad]

They are ok for refugiums and macroalgaes, but not bright enough for most corals.

[dendro982]

If you are on a budget - they are good enough for 12" deep tanks, placed no too high above the tank.

I used them for a months for some of my nano tanks, in the desktop arm lamps for $11.
27W for 5-6g, 2x27W for 10g or more, and so on.

You can't keep sps under low wattage lights, but many softies and LPS will be OK.
I had seen on the web a few hoods, made to accomodate several CFL bulbs.

[sixspeed]

what were the K's on those 27m bulbs?

[michaeldaly]

I've seen some very large screw in energy savers. I think on 6500K said it was 96 watts.

But you'll need a pretty big canopy to fit it in.

[corbett_n]

I wish they would make a cheap 10000k screw in flourescent. You could add some cheap lighting to any tank

[dendro982]

<a href=showthread.php?s=&postid=9668669#post9668669 target=_blank>Originally posted</a> by sixspeed
what were the K's on those 27m bulbs?
27 Watts, daylight - 6,500K. It seems to me, that better to use 2-3 bulbs of this wattage along the tank, than one big bulb in the center - more even light distribution.

There are also 7,000K U-shaped (2-pin base) PC bulbs for a work lights and slim desktop lamp ($25), but they come only in 13 Watts, $4 ea.

In US may be available inexpensive desktop lamps for 96 Watts quad (4-pins base) lamps. Here are only bulbs in stores.