Advice gratefully received!
: I have an Aussie-built GRP 30' Clansman (circa 1976). The built-in grp freshwater tank occupies the forward half of the V berth and extends forward under the chain locker. There is a beam-wise grp baffle and the tank holds 100 litres. When I first bought the boat in 2003 the water
tasted disgusting. I found out why when I prized-open the antique inspection
port! The balooning, multi-coloured growths were impressive..... I flushed everything out with bleach and replaced all outgoing hose with taint-free drinking water
hose, replaced the taps and installed an inline charcoal filter between the tank and the taps. All of that, however, seems like cure rather than prevention. The inside of the tank appears to have been painted with some sort of cream/off white heavy-duty paint
- flowcoat? Bilge paint
What would any of you do to these tanks
to prevent growth and fouling in the future?
1. Drayton Tank in the UK produces a solvent-free epoxy
paint which is used for lining fibreglass water tanks
in some UK schools i.e. meets strict health
regs. 2. After installing a filter for me on land, between mains and house, a plumber remarked I should cover the clear acrylic
mesh-holder because algae requires light to grow. Good quality solid fibreglass is translucent.....)