Lighting Heat

[Brian5000]

For the first year, my tank sat right at about 82-84F with the peak temp in my house at about 80F in the summer. This summer, my tank is a minimum of 84F and even peaked up to 90F once doing some coral damage. I bought Coralife MH bulbs for my Coralife fixture when I replaced my lights in May, which coincidentally, were extremely cheap compared to other brands on Premium Aquatics.

My question is: Do different MH bulb brands give out more/less heat? Did I get what I paid for? Or should I be looking for other reasons?
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climate change

 

[SnowManSnow]

MH is GOING to put out a LOT of heat, particularly the HQI. The best thing you can do is get some fans to blow across your water surface. It WILL cool it down.

You COULD get a chiller, but fans are MUCH cheaper

That being said. Im not a fan of Coralife MH lamps. I AM fond of Pheonix lamps though Same wattage, same surface area. I'm thinking they are going to put out the same amount of heat no matter what brand you buy.

 

[Len]

Some MH bulbs do seem to run hotter then others, but the difference shouldn't be enought to account for the 6 degree swing you experienced. For example, if you're using fans, you might want to replace them. They get less effective as they get older.

 

[phillstone]

For example, if you're using fans, you might want to replace them.
Or at least clean them, you would be surprized how much airflow can decrease w/even a little dust on them