What do you think...
Here's the situation: I have a 125 gallon with Amphilophus flaveolus and cutteri in it. I had two 250w heaters. One is newly purchased. One is newly replaced from Marineland. Both have the new technology with the on/off light indicators. For about a month, the heaters could barely get the tank above 78*, when set on 82-86*. I dealt with it though. Yesterday, the tank was at 74* and my Amphilos were hiding. Both heaters were lit up red, saying they were heating.
SO... Here's what I did: I ran to the shop, where I bought the others. I bought a 300w Marineland to add to the mix (even though the guy at the store said ONE 300w heats his 125 gallon). I thought this would simply and quickly fix my problem, while I figure out if the others are bad.
Here's the problem: Today the tank is still at 74* with 2 250W heaters indicating they are heating AND a 300W heater that is in the tank; it is still cold. BUT the 300W is frequently on/off with the red light, mostly off. The tank is clearly not 80 - the temperature which the 300w is set. If I bought it yesterday, wouldn't that 300w be pumping heat? It's not coming on and it's not providing heat.
I was hoping the 300W was the solution to my problems. I have so much going on, that I didn't need this problem. It's realllly bugging me.
Thanks for your input. I really don't even know where to start. I can't justify dropping more money into heaters for this tank.