Embark on a beginner's journey into the captivating world of marine tank keeping with this detailed account of setting up a 70-litre reef tank. This article chronicles the entire process, from the surprisingly affordable acquisition of a large, pre-owned tank to the gradual introduction of its vibrant inhabitants. Learn about the challenges faced and overcome, the equipment choices made, and the clever automation implemented to ensure a thriving and easily managed ecosystem. Follow along as the author navigates the initial setup, cycling process, and the exciting addition of clownfish, a crab, shrimp, and goby.Discover the author's practical approach to filtration, temperature control, and water quality monitoring. This comprehensive guide offers invaluable insights into building a robust and visually appealing marine environment, even on a budget. Whether you’re a complete novice or simply seeking inspiration for your own reef tank project, this beginner's experience provides a wealth of practical advice and a glimpse into the rewarding journey of creating a thriving underwater world.
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Tank and Stand Acquisition
My marine tank journey began with a fantastic find: a 1780 litre tank and stand for a steal at £50 on eBay! It was about twelve months old, but incredibly well-cleaned and practically brand new. The stand itself felt a bit flimsy, so a proper cabinet is on the upgrade list. I’m really pleased with the value; online, a similar setup would cost around £200.

I researched the tank; it's an Eco style 61, a surprisingly good deal. The stand, however, needs replacing. I'm planning a more robust cabinet with doors to hide the equipment and improve the overall aesthetic. For now, the existing stand is functional and quite sturdy, despite its appearance.

The unexpected bargain certainly jump-started my reef tank project. It was a risk, but finding a good deal on the tank was a major advantage. Upgrading the stand to something more substantial is a task for the near future; until then, I have a functional, if not visually appealing, setup.
Cycling and Inhabitants
This was my first marine tank, so I had a lot to learn! Reef Central UK was invaluable, providing loads of helpful advice throughout the process. I sourced eight kilos of live rock from Maidenhead Aquatics, my favourite local fish shop. Initial concerns about the rock being 'semi-cured' were unfounded; after a week, there were no ammonia or nitrite spikes.

The tank cycled perfectly. After about a month, tests showed zero ammonia, zero nitrite, and just a trace amount of nitrate. This confirmed the rock was fully cured, a pleasant surprise and indicative of high-quality live rock. My local fish supplier and I concluded that it was fully cycled after a month of monitoring.

After a month-long cycle with the live rock, I added two clownfish ('Nemo' and 'Max'). They're thriving, showing good growth. One has grown larger, exhibiting female characteristics, and has developed a darker coloration.
Adding to the Ecosystem
Following the clownfish, I introduced Sebastian, a white Rex crab, who enjoys hiding amongst the rocks. Then came Pippa, a peppermint shrimp, and Skye, a sand-sifting choc goby. These additions further diversified the tank’s ecosystem and added visual interest.

A few hitchhikers also joined the community, including a brittle star and several small snails. These unexpected additions contributed to the tank's natural balance. The snails, in particular, are quite fast-moving and help keep the glass clean.

The addition of these invertebrates added complexity and visual appeal to the reef tank. It is exciting to watch the inhabitants interact and contribute to the overall health of the tank.
Equipment and Filtration
The tank initially came with a built-in filter system, but it proved inadequate for marine use. I replaced it with a Son HW 302 canister filter from Germany which has a surprisingly good flow rate, making a huge difference in water quality. It’s quiet and efficient; I've only cleaned it once.

Additional equipment includes a double fan system (Boyu brand), a Tetra HT 100 heater (rarely used so far), and a cheap eBay power head. I intend to add a wave maker soon for improved water circulation. A surface skimmer helps maintain water clarity.

I upgraded the filtration system significantly. The canister filter is a cost-effective and efficient solution. The additional fans and heater, along with the surface skimmer, ensure a well-maintained tank environment.
Monitoring and Automation
An ammonia alert tag provides instant notification of any water quality issues. A custom-built temperature controller (STC 1000) with heating and cooling capabilities maintains a stable water temperature of 26.5 degrees Celsius. It is a significant improvement in tank management.

The controller is wired to manage the heater and fans automatically, maintaining the ideal temperature range. I'll make a separate video detailing the controller’s construction. The automation reduces the daily workload significantly.

The automated temperature control and alarm systems drastically reduce the need for constant monitoring, leaving ample time for other tank maintenance or simply enjoyment.
Future Plans and Conclusion
While away, my girlfriend’s mother will care for the tank, following detailed instructions on feeding and water topping. A simple manual water topping system is in place; a pump with a shut-off valve prevents siphoning issues.

Future upgrades include a new cabinet, smarter lighting, and possibly damsels for added colour. Corals and anemones are on the long-term plan, contingent on acquiring suitable lighting. The overall setup is robust but needs further aesthetic enhancements.

The tank's current state is a great success for a beginner. The automated systems reduce maintenance, leaving room for future additions. My goal is to make the whole setup look as amazing as the environment it creates.