Short answer: clean your tank every six months, inspect it after every monsoon, keep the lid sealed at all times, and flush the overflow and sediment points monthly. In Kerala’s humidity, skipping one cleaning cycle is usually what allows algae to establish.
- Cleaning schedule: full clean every 6 months, quick check every month.
- Post-monsoon inspection is the single most important habit.
- Light is algae’s fuel: a sealed, opaque lid prevents most growth.
- Sediment is normal; recurring sediment means a sealing problem.
- Cracked or chalky tanks cannot be cleaned back to safety. Replace them.
Your Kerala maintenance schedule
| Task | How often |
|---|---|
| Full tank clean and disinfect | Every 6 months |
| Lid seal and vent check | Monthly |
| Post-monsoon inspection (walls, base, fittings) | Every October |
| Overflow and drain flush | Monthly |
| Full replacement check | Year 8 for plastic, year 12+ for steel |
After the monsoon
October is your inspection month. Look for silt buildup, wall discolouration, loose fittings, and any sign the tank shifted on its base. Clean early: water quality issues compound quietly through the dry season.
When cleaning is not enough
If your plastic tank is faded, chalky, or cracked, cleaning will not restore it. UV damage is structural. That is the point where switching to a stainless steel tank pays for itself, and where our three-layer plastic tanks, built for exactly this climate, are the dependable alternative.