Are the Vortech MP40 Worth the $$$

[Ron99]

Don't know about improvements as I set up the tank with the MP40. But it is the only powerhead in my 4 foot 75 gallon and it provides tons of flow. I only have it turned up about 2/3 full. I really like how the random modes continuously change the flow. Seems much more natural to me.

However, in a 5 x 3 x 3 tank you might need at least two of them running in opposite mode to set up a wave action. Your best bet is to contact Ecotech and ask them about your application and/or check out their forum at reef central.