What were your biggest purchase mistakes?

[Bblinks]

Originally Posted by kien

I purchased a 150g tank a couple of years go. Now I'm out thousands if not tens of thousands of dollars! What a money pit!

Hahahahah, that's awesome, I started with a free 20 gallon and upgraded to a free 55 gallon tank. 6 years and 20k plus later. What kind of hobby is this? But if I had a choice I would probably do it all over again. Any one looking to purchase a kidney? I want a bubble king 250.

Serious note. 3 x 400 w is way too much for a 210, 250 is plenty enough.
Bigger is not always better. Coralife power bar, I am on the third one in less then a year. Free if anyone interested. Hydor 1000 skimmer. Try to take the cup off is like pulling teeth. Aqua doser is 50/50 works decent but could be a lot better. Zeovit, good product but absolutely not a necessity. All ki d of magic potions. The things we go through to try to grow some coral.