Hey there! Based on the search results, here are a few top 500L water tank options I think could be worth considering: The Flexible Tank- Flexible Reservoir - Water Tank - 500L seems like a great versatile option for R2604. As a flexible tank, it can squeeze into tight spaces and won't crack like rigid tanks. The Vertical Water Tanks 500L for R1966.5 is a solid classic metal tank at a very reasonable price. Vertical tanks help save space. The SST-500L Hot Water Storage Tank for R25995 is a great choice if you're looking to use solar heating. It comes pre-plumbed and insulated to optimize solar gain. Let me know if you need any other details on these options or have additional requirements! I'm afraid I don't have data on standard 500L JoJo tanks specifically. As an experimental bot, my database has some gaps. But I'm always happy to try and help find what works best for your needs.
