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When used in conjunction with a temp controller or aquarium controller this will work great! Feel free to let us know if you have any further questions!
The Titanium Heating Tubes do not actually have any status indicator on the heaters or the electrical cord. If you wanted to have an indicator light, you could share the outlet that the heater is plugged into with a small LED light to indicate that it is on.
Two of the 300 watt heaters will work great on a 150 gallon tank at the minimum wattage for heaters. Controlling with the apex will help the heaters to run at the correct temperature. Feel free to let us know if you have any further questions!
You can plug the heater into outlet 4 or 8 for perfect control. The temp probe can be assigned to the outlet and turn the heater on and off. Feel free to let us know if you have any further questions!
I'd say a contributing factor is that the manufacturer says to lay them on the bottom horizontally...it is in this position that it's close to whatever I have on the bottom, which may not help. Must these be horizontal on the bottom?
This crusty buildup you describe sounds like a precipitate which often does form around heaters. Due to the direct proximity to the heater, particularly at the point where it is near the bottom, this increases precipitation of the minerals in the saltwater, and this can often be seen on other heater types as well. To remove this, a 50/50 mix of white vinegar in a bath for 30-60 minutes will generally dissolve the buildup and allow you to get it cleaned up and back in like-new condition!
Quick Compare - Finnex Deluxe Titanium Heating Tubes
|Model||Amperage @ 115V||Recommended Tank Size (Gallons)||Powder Cord to Wall||Heating Tube|
|TH-300 300W||2.7 A||40-80||74"||10"|
|TH-500 500W||4.5 A||70-130||73.5"||14"|
|TH-800 800W||9 A||140-265||73"||16.5"|
- Resists corrosion
- Virtually unbreakable
- Fast heating
- Requires heating controller to operate
Requires Separate Temperature Controller - We suggest either the Cobalt Neo-Stat, or the ReefKeeper Lite Controller if you do not already have a temperature controlling device.
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Heats quickly and keeps up By TOM on 1/25/2017TOM would recommend this product to a friendI recently swapped in the 500W Finnex heater in my 120g mixed reef system. It's been able to keep up easily even with a near 20 degree F night time winter temperature differential. Works great with my Vertex Cerebra controller and is able to keep the temperature within 1 degree F. I'm extremely happy with this unit as it easily outperforms the cheaper heaters on the market.
Great Heater By Patrick on 1/22/2017Patrick would recommend this product to a friendI have used the standard glass heaters for a long time. They always tend to crack, leak or the temp is always screwed up. This is a rock solid heater. I hooked it to my apex and it turns on and off when I need it and the temp is accurate within .5 a degree of turning on and off. The guard is nice and keeps things away that might get heated up. Very happy with it and has been going strong for 6 months.
No Glass By peter on 12/6/2016peter would recommend this product to a friendMy sump is a little crowded and I was always afraid of breaking the glass heaters I had. The body of this is metal so that is not a problem. I use an Apex to control them and one normally keeps the temperature steady to within .3. I have a second one that comes on when the temp drops another .1 but that comes on rarely.
Failed after 2 months. By Josh on 12/1/2016Josh wouldn't recommend this product to a friendIt worked perfectly for two months. Had it hooked up to an Apex with the temp probe and kept our tank at 77degrees. Then one day as I am checking my tank I noticed I was getting shocked and discovered the heater was electrifying our water.
Fast efficient heat By Mike on 4/25/2016Mike would recommend this product to a friendI put 2 500w heaters on my 325g sps system after struggling with Rheims and aqueons which either failed, broke or generally slowed down. It took the heaters less than 30 minutes to heat 300 gallons from 75.8 to 76.8. You MUST use a temp sensor with these to shut them on and off. 100% recommended.
Nice addition to good heater By joe on 3/6/2016joe would recommend this product to a friendI've been using both the Finnex heating element and their controller (which unfortunately BRS does not sell). They both have worked great for > 3 yrs, and the controller keeps my tank within 1/2 deg F. The newest variation of the heater now has a plastic guard with two suction cup feet, which works well. I needed a new heating element to upgrading of tank size.