Cleaning sediment from Diesel tank

[Gazza]

I'm in the process of cleaning out the tank on our boat as a fuel sample showed significant contamination by sediment (OK for bug and water though). I've pumped out the tank and there is quite a bit of gunky sediment on the floor of the tank - I've given it a going over with a metal brush and I'm now thinking of putting something in the tank to loosen up things generally before I pressure wash and dry out. I'm wondering if anyone has any bright ideas as to what agent might be best - I was think along the lines of bleach which would (hopefully) loosen up any stuck on gunk as well as being a disinfecting agent.
Any thoughts/experiences gratefully received.
Thanks in advance.

 

[burgundyben]

I had greatcsuccess with traffic film remover and Fairy Liquid. Both of which I think are detergent.

 

[Billy no mates.]

Get it steamed cleaned.

 

[NormanS]

Elbow grease and some clean diesel works wonders.

 

[rib]

Read or heard (second hand) that jayes fluid worked well ??

 

[colinb11]

if its loose and you can shake it and get them out after, what about ball bearings, say 40-50 with some clean diesel, should be good for loosening any flakes of rust also?
assuming anything breakable has been removed, pickup pipes, sensors etc..

 

[david_bagshaw]

Have used bleach, and washing powder and a small electric pump to a hose along with a scrubbing brush with great sucess, in a 2000 ltr multi baffled tank.

wet vac to dry and a fan to blow air in to remove residual dampness