Ready made bladder tanks of various sizes are available from most good chandlers
Initially developed for small cruisers for installation in lockers and under bed spaces, they may be too small for most canal boat applications.
However, for small boats whose owners do not require customised fittings they are ideal.
It is also possible to have these bladder tanks custom made. This is ideal of you have an awkward space in the bow, perhaps due to having a retro fitted bow thruster or if your original integral tank is giving problems.
The specialist manufacturer will construct a bag liner to the exact dimensions of your integral unit.
The bladder is seam welded and brass or plastic fittings are custom positioned to suit you filler port and outlet.
The existing tank can be insulated, which also takes care of any sharp welds etc which could be abrasive to the liner, and the bladder is simply dropped in through the existing access hatch. Water treatment modules can be inserted into the bladder at the point of manufacture should you wish.
Expect to loose about a fifth of your original capacity if you choose this system, but the benefits are clear. Check our Products and Services Guide for details.
Sanitise all the above tank systems with purpose formulated products in powder of tablet form at least once per season.
If using water soluble tablets and powders, dissolve them first before introducing them into the tank. The effervescent nature of these treatments can damage tank coatings and rubber if concentrated in one area.