Heaters to keep Temps stable
- Thread starter Daddyrawg
- Start date
Vinny Kreyling
Premium Member
In this case 2 is better than 4.
However, I had a chiller with a 4 degree spread too.
However, I had a chiller with a 4 degree spread too.
Ok i think these temp differences are what caused my corals to bleach
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Accuracy also matters. Not only do you need a heater (2 if a large tank) you need a thermometer you can trust. Strong light PLUS high temps can bleach corals and coralline (been there)... if your temp swings too high, cut the lights. LEDs aren't as heat-charging as the old Metal Halides, but it still matters. Wide swings are not a good thing.
For your future reference and information, though not at issue here: most fish and non-fish die when temp drops to 62F plus a fraction; or rises to 83---in which the fact that hot water carries much less oxygen than cold does also comes into play. So death will be hastened by suffocation. That 62-83 is the life range for a reef tank, 78-79 is probably the safest comfort range for most that we keep; and the second thing to remember is that chemistry (including life) proceeds faster in overheating and slower in loss of heat.
If your tank suffered in the low range once, it's not good; but it's increasingly bad if the heat dips repeatedly; and calamity happens fast if that temperature kicks up into the danger zone.
All that aside, if you find your heater (check the wattage against what's available) is struggling, installing a second one may help that one cope. And bear in mind heaters get longer with more power: check that if you order another heater. The high powered ones can be longer than your tank is deep.
For your future reference and information, though not at issue here: most fish and non-fish die when temp drops to 62F plus a fraction; or rises to 83---in which the fact that hot water carries much less oxygen than cold does also comes into play. So death will be hastened by suffocation. That 62-83 is the life range for a reef tank, 78-79 is probably the safest comfort range for most that we keep; and the second thing to remember is that chemistry (including life) proceeds faster in overheating and slower in loss of heat.
If your tank suffered in the low range once, it's not good; but it's increasingly bad if the heat dips repeatedly; and calamity happens fast if that temperature kicks up into the danger zone.
All that aside, if you find your heater (check the wattage against what's available) is struggling, installing a second one may help that one cope. And bear in mind heaters get longer with more power: check that if you order another heater. The high powered ones can be longer than your tank is deep.
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