>From: "E. Keith Johnson" <zekj2 at Access_ETSU-Tn.Edu>
>Date: Fri, 02 Aug 1996 15:49:54 -0400
>Subject: Re: Aquatic Plants Digest V2 #112
> Does anyone have the lumens specs for the F32T8/SPX50?
>From GE Spec Sheet...
>Initial Lumens: 2800
>Mean Lumens: 2520
Thanks for the data, Keith. This is a late reply, but to close out this
discussion, the comparison between the 3 bulbs I'm using is:
Bulb Type Power Init. Lumens Mean Lumens Lumens/Watt
Ultra Tri Lux T10 40W 3350 ?
UltraLume T12 40W 3280 2950 74
SPX 50 T8 32W 2800 2520 79
So, the T8 is more economical, as far as lumens per watt is concerned, but
it does not give higher output than the other T10 and T12 bulbs I have.
Since I'm most concerned with getting the most light to my plants, I don't
think I will go with the T8.