I'd pass on the Coralife Twist and get an AquaUV Classic 25 watt. Watt for watt, it's a much better UV, can handle more flow more efficiently and has a much better bulb. The AquaUV is infinitely better in every respect and will last you a lifetime. Plus, the bulbs won't need to be replaced as often which will save you money in the long run. I'd also suggest getting one with a wiper so you can keep the sleeves clean without having to take the UV apart to do it.
That said, talking wattage is kind of useless without knowing the system size and what kind of flow you have at your disposal for the UV. Then there is your intended usage for it because that will have a direct impact on the flow requirements.
Yeah, I was looking at the Emperor Aquatics Smart UV 25 Watt also...
Not to hijack but thanks for the detailed response sleif. I have been toying with the same setup on my 120. The turbo just looks like a cheaper unit and I've never heard of anything bad about the Aqua UV products.
Why are Aqua UV flow rates so much higher than Emperor Aquatics?
Their flow rates are about 5+ times higher...
You talked me into the 25 watter. I will be using this for parasite help. I see where the 25 watt needs 400gph for 90,000. Would any of you guys recommend a pump just for this uv? A tad under would/would not hurt? Thanks in advance!
Can you setup a line of your return pump via a manifold? Also, you can go a little higher in flow. As I mentioned, UV will not eliminate ich in a tank. It can slow down the cycle by eliminating some of it from the water column but it isn't a cure or even a means of truly controlling it. If you run multiple tanks and run the UV between the tanks, it can prevent the spread from one display/system to the next but don't expect miracles from it. As for a pump, An Eheim 1260 with a valve on it would work fine but the fittings in and out of the UV might just produce enough friction loss going through the UV to slow it down to the 400-450GPH range.