Solbio Original is a 100% plant-based toilet fluid for portable toilets, cassette toilets and holding tank systems. No formaldehyde, no dyes, no synthetic fragrance: natural soap, citric acid, essential oils and plant extracts only. Scent is eucalyptus.

The fluid breaks down waste and toilet paper, prevents gas build-up and odours, and keeps the tank free of scale and urine deposits. Emptying is easier and cleaner as a result. One formula, four uses: waste tank, flush water tank, grey water tank and as a toilet cleaner.

The 1.6 litre pouch gives roughly 40 doses of 40 ml.

Dosage

• Waste tank: 40 ml per 0–20 litres of tank capacity, plus about 2 litres of water. Refresh every 3 to 4 days.
• Flush water tank: 40 ml per 20 litres. Prevents black flakes and algae.
• Grey water tank: 40 ml per 50 litres, poured down the sink or shower drain.
• Cleaning: a splash in a bucket of water removes scale, dirt and urine scale.

Original or Marine?
Original is the standard version and is intended for fresh water flushing. If your toilet flushes with sea water, or you have a larger holding tank on board, choose Solbio Marine: same formula, higher concentration, and it works in salt water.

Note: discharging black water from pleasure craft is prohibited on Dutch inland waters. A biological additive does not change that. Empty the tank at a pump-out station or an approved discharge point.