Fuel Right diesel additive

[The Q]

Water in your tank comes from a leaky deck fill or most commonly the tank vent line

inspect your tank fill..rubber O ring and design ..some are garbage

on custom builds the … vacuming in moisture thru the tank vent problem … is solved with two tank vents

one large diameter refueling vent, vented overboard , with a valve labeled ….CLOSED FOR SAILING
the second vent is quite small diameter, permanently open ..just enough ID to prevent a vacume from forming when motoring …and this vent is not vented outside the boat…always inside , typically up high in the engine room ventilation system or in a cockpit locker

these boats do not get water in thier fuel tanks

Inboard vents are definitely forbidden in out local regs, and the outboard vent is of a minimum diameter and shut off valves are also forbidden on that.
You forgot one source of water... Your diesel supplier.
Round here all the diesel suppliers have their tanks below ground, which is below the water level.
Even my local supermarket petrol and filling station has had trouble with water getting into the tank and has just had them replaced..

 

[mckenzie.keith]

They say that to stay away from bleach and use the proprietary purification tablets …no taste and bleach does something to rubber seals or something

I don’t know what the magic ingredient in the tables is

Sodium dichloroisocyanurate.

Slow release chlorine agent. I would be hesitant to rinse any watermaker parts with water that has been treated with any chlorine agent. Not an expert though. Maybe the concentration is so low that it is OK?

What Are Aquatabs?

Aquatabs are the world's leading brand of water purification tablets trusted by major aid agencies, NGOs, and peacekeeping / defence forces worldwide. Fast acting and ultra-compact, Aquatabs are great tasting, Iodine-free and safe for everyone.

aquatabs.ca

 

[chester]

Sodium dichloroisocyanurate.

Slow release chlorine agent. I would be hesitant to rinse any watermaker parts with water that has been treated with any chlorine agent. Not an expert though. Maybe the concentration is so low that it is OK?

What Are Aquatabs?

Aquatabs are the world's leading brand of water purification tablets trusted by major aid agencies, NGOs, and peacekeeping / defence forces worldwide. Fast acting and ultra-compact, Aquatabs are great tasting, Iodine-free and safe for everyone.

aquatabs.ca

homeopathy for water tank contamination?

 

[slug zitski]

Sodium dichloroisocyanurate.

Slow release chlorine agent. I would be hesitant to rinse any watermaker parts with water that has been treated with any chlorine agent. Not an expert though. Maybe the concentration is so low that it is OK?

What Are Aquatabs?

Aquatabs are the world's leading brand of water purification tablets trusted by major aid agencies, NGOs, and peacekeeping / defence forces worldwide. Fast acting and ultra-compact, Aquatabs are great tasting, Iodine-free and safe for everyone.

aquatabs.ca

Yah

rinse watermakers with product water , avoid tank water

sometimes it’s not possible and you end up using tank water …nothing is perfect

 

[mckenzie.keith]

homeopathy for water tank contamination?

Did you hear about the homeopath who drank distilled water? He died of an overdose.

 

[charisma94]

I'm a big believer in this stuff... it definitely works as advertised.

Not a biocide, but works on the premise of no water = no algae.