Hagen Glo Dual Timer for T5 Lighting Systems

I was ready to return this product because I had no idea how it worked and I could not find any instructions or video demos online. The instructions that came with the product are horrible. I gave it to my roommate who is good with clocks and he figured it out.

There are two steps/components in this device:

One is the front dial that you rotate to set to the current time. You need to set it to a 15-minute interval time (say 7:00 or 7:15, 7:30, etc) . Leave this step until the end

Two are the outer ring segments. These are hard to pinpoint but if you pay close attention (feel free to use a magnifying glass if you need to) you can press each plastic segment down. You need to add a little pressure and they will take the up or down position. There is a segment for every 15-minute time lapse. So with the segments you can indicate when the power remains on (down position) or off (up position). And you can basically set the schedule that you need as many times in a 24-hr time frame.

For my aquarium, I have the lights coming on early in the morning at 7am, then shutting down for 2-3 hours at noon (this is according to some sources I read to impede algae production) and then come back on at 3pm until 7 or 8pm

Now, another tricky aspect is the red button on the side. This works such as if the switch is up (timer drawing shows) the timer segments you chose are in effect. If it is down (the "I" shows) the timer does not operate.

Nothing I described above is in the manual. So that's why I am giving it 4 stars because it works but you have to play with it.

So far it has been working but I'll update if it breaks

I thought this might have two timers. But it doesn't. It has one timer, that controls two outlets. It won't control two sets of aquarium lights at different times. It is basically one timer, that splits electricity to an extra outlet instead of one. I was hoping to have white lights comes on during the day, and then blue lights come on in the evening. This will not do that.

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The timer works fine. You do need to fine tune it once a week as the time will be off a little. I have two of them and both of them have flimsy mechanical wheel in between. It's not smooth when you need to turn the time wheel. The timer does take time to learn how to use as the instruction was pretty bad. There is youtube video if you still can't figure it out. Basically you point the arrow to current time, and push the pin down for the time you need the timer to turn on. It's a little tricky as I didn't know how to push it down when I first received it.

I highly recommend a timer as it saves you a lot of time switching on/off lights and it gives your aquarium a stable environment.

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I have five of these GLO timers which I use for various planted aquaria and house plants. They are very handy to use, since I have been able to stagger the times in which the lights on these aquariums turn on and off.

The only drawback is that Hagen's instructions are terrible and should be revised to make setting up this timer easier to understand.

Aside from that, these are excellent timers that work very well with a variety of aquatic lighting systems; including Hagen's own GLO T-5 linear fluorescent lights.

Highly recommended.

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The switch didn't work on two timers and one timer was slow. It was a discount price, so I guess you get what you pay for.

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