How many watts? It's good for nano reef? It won't heat the water a lot?
483222
From what I can tell, it doesn't heat the water at all. LED's are not big heat producers. I'm using it on a 5 gallon nano freshwater tank with very good results so far.
2199493
It was designed to fit a wide range of Spa's. It has a low power consumption and will not be good enough for large spas though. Another point is that it only maintains the temp where it is turned on at. It will not heat the water hotter. Put it in our jacuzzi bathtub and its great. Keeps the water temp just where we want it for an hour or more. For this it is perfect.
1287790
not a lot, I have one running 24/7. I have it on a pretty basic power strip. No issues so far, and my entire fish tank (air pumps, lights and filters) use very little energy.
450274
It's a bit weak for a proper 5 gallon tank. Go for the Hydor Theo 25 watt submersible. It has adjustable temperature settings and doesn't cook my snails when they crawl over it.
1748691
My Spa seats 5-6, not sure of the watts but I had a large propane heater and replaced it with this Hayward 11-kilowatt heater and we are much happier with it. If you go witht the Hayward make sure you have an electrician wire it. If you don't use the right gage wire you will ruin the heater and void the warranty. I installed the heater exactly the way the manual tells you to and we have not had a problem. We don't keep our hot tub hot. We generally turn the heater about 3-4 hours before we want to use it.
1061033
The power on this is 110V. To be perfetctly frank with you. Though the unit is nice and may do well for a 30 gallon tank. I wouldn't advise it for anything larger if it is to be saltwater. Go with the traditional sump and overflow with the separate protien skimmer. This is a nice unit if you are considering small but will not properly do the job on anything larger.
783466
I actually love this little tank. I had it as a saltwater pico tank for a while than a treatment tank for freshwater. A little 35 watt heater from Walmart will fit into the return section.
478680
If you have a nano fish-only then this would work fine, but nowhere near enough light output for corals. (maybe some softies?) I am using one, but as a light over my sump/refugium on my saltwater tank.
344739
I am using the 300 watt in a 120 gallon for aquaculture, it seems to handle very well, even outside. I would probably use 2 or a larger one for 300 gallon?
1941676
Specs say 20 gallons or less. I would say between 10 and 20. Anything less and the tank gets too warm from the device. Definitely a good product though. I gave the 9 watt one in my 20 gallon and it works great. I used it to clean up an algae bloom but the specs say "Kills algae, pathogens and harmful bacteria" which may be why the tabs recommended them.
1060999
Maybe a little, but probably not much. You'll experience a lot of heat loss where the water isn't covered. I actually wish I had purchased a bigger one because of this.
1497043
300 Watt can heat a larger fish tank. Be careful not to drop it as it has a thin glass tube that the water travels through and it will crack and leak if you do drop it.
1683083
The 10 watt is too much for your tank. I had mine in a 3 gal and it was too warm.
714368
I took a look at my Dork Food specifications and it states that my unit is 120V AC both input output and with max 15 Amps. As an aside it works like a charm. If you decide on this unit I would suggest you get the largest slow cooker you can find. That was my only draw back. You will find that you will want to do larger items or multiple items and you just won't have the capacity. If you still are interested in the Dork use a small aquarium vibrator pump and air stone to keep the water circulating. I finally went to the PolyScience circulator and heat which is a quantum leap and just about perfect. $240 discounted. I took a look at my Dork Food specifications and it states that my unit is 120V AC both input output and with max 15 Amps. As an aside it works like a charm. If you decide on this unit I would suggest you get the largest slow cooker you can find. That was my only draw back. You will find that you will want to do larger items or multiple items and you just won't have the capacity. If you still are interested in the Dork use a small aquarium vibrator pump and air stone to keep the water circulating. I finally went to the PolyScience circulator and heat which is a quantum leap and just about... » Read More I took a look at my Dork Food specifications and it states that my unit is 120V AC both input output and with max 15 Amps. As an aside it works like a charm. If you decide on this unit I would suggest you get the largest slow cooker you can find. That was my only draw back. You will find that you will want to do larger items or multiple items and you just won't have the capacity. If you still are interested in the Dork use a small aquarium vibrator pump and air stone to keep the water circulating. I finally went to the PolyScience circulator and heat which is a quantum leap and just about perfect. $240 discounted. « Show Less
1300989
It doesn't get HOT. It WARMS food so it's ready when you want it. Don't know about watts.
1550691
In July? I mean it would work depending on size of sump. But it costs a lot of electricity to run 300w .. More than you think .. And I prefer to heat directly where the fish are and only when I have to.
512422
I owned 2 of these units . . . they both failed, one nearly started a fire. A two element water heater is very efficient anyway, I don't know if you'll realise any big savings. The first larger element (that draws much more power) kicks in to bring water temp up to desired setting. The second, much smaller keeps the temp constant. Based on the basic conversion table, 7200 watts would be the max . . .