show me ware you can get a hydor that pumps 3200l for under 20quid!
Show me a Seio that can pump 4,500 LPH for 8W!
(hint, you can't, the closest you will find is the M1110 which is 4,300 LPH at 15W).
Also, look at the prices. The Seio M1110 does 4,500 LPH for £36 ish (can probably get it cheaper). Even the Tunze 6045 is only £55, and that is paying for the best make of powerheads there is. So, you save a few quid at the purchase but it costs nearly twice as much to run meaning that within 2-3 years (not that long in keeping a reef) you are paying more for the Seio which is larger and uglier in the tank.
and your telling me ur never got somethink and never modded it...
I have never bought a powerhead (or anything else) with the intention of then having to mod it when there is a far more reliable and better constructed example on the market that already does what I want it to do (Tunze). The only fish related things things I have purchased as aquatic products to mod are my tanks which I then drill as I already have the drill bits and as such save £20 each time on the hole.
When it comes to buying equipment I prefer to outlay more money at the start for a decent and reliable brand that costs less to run than to buy a cheap model which I then have to modify to get to do what I want and then have to pay twice as much to run.
I always find it strange that when people are prepared to pay £10-£20 standard for each fish or coral, and in the region of £10 per kilo on live rock that they seem unwilling to pay an extra £20-£50 on powerheads which will save them money in the long run both in terms of reliability and cost to run.