Sludge In Tank...

I'm guessing that i am probably not the first one to ask this as i'm sure that there have been a good few of you that have had the joy of coasting to a halt on the side of the road due to your fuel line being blocked with sludge from your fuel tank! For me, this event happened on Saturday, beside a busy A34, which was lovely... Oh, with a grumpy wife and family on board just to add to the fun! After a brief argument about how i've run out of petrol i went to investigate the problem... Sure enough, there was no petrol coming through the line, which only added fuel to the wifes fire! "See!!" She exclaimed, "You've run out of petrol!!" Well, knowing that i had over 1/4 of a tank left, i tried to explain that i still had loads left. But, of course, being a very angry, and by now hungry woman she was having none of it! So, reluctantly i did the walk of shame, some 2.5 miles to the nearest petrol station, or atleast, i would have, had i not got picked up by a kind fellow who not only drove me to the petrol station, but he drove me back too, and he even paid for the petrol!! I guess he probably took pity on my, let just call it road-worn car! Anyhoo, once back i put about 95% of the gallon into my car, and guess what, it still wouldn't start, but that mattered not to my wife, who by now was even more angry than before due to boredom, the heat, the kids going nuts, and of course, HUNGER! I figured i wouldn't make a point of saying i told you so, as by now if we were in a cartoon, i would be looking like a big ham or something! So anyway, i tipped a drop into the carb, and away it went... Briefly! Proving to me atleast that the problem was feed, or lack thereof! Anyhoo, i persisted with this method of starting my car until i watched a big lump of red sludge go up my fuel line and into the carb... A couple more splashes of petrol, and finally, away it went, i then drove the ramaining 130 miles without hitch... Almost! 10 miles from home, it happened again, so i went about trying to start it in the manner that i had tried earlier, but it wasn't having it, and eventually my battery was flat. So i then decided that my brother needed a trip out to the A34 for a bit of impromptue towing fun! Of course, he showed up, and has now plastered farcebook with images of me and my car broken down on the side of the road! He then hitched my car up, and within about half a mile of being towed while it was in gear it was running again! I was then able to drive home, and it's been ok(ish), although it has stopped a couple of times since then, it's started again pretty quickly, usually by bump starting it! I am, however bored of this situation, and want to rectify it. So what i'm wondering is is there anything i can tip into the tank to dissolve, and remove the sludge? Something like AMETECH SLUDGE REMOVER. Has anyone used this or anything like this, and if they have, how succsessful was it? Other than that, i'm guessing the answer is to remove the tank and clean it? Once it's removed, how is it best to be cleaned, and what do i clean it with? Any help, and/or advise from my fellow spanner-twirlers would be greatfully received... Thanks in advance!