Re-Advertisement: Bids are hereby invited for the following: 6-month agreement for the maintaining of life support systems for the aquariums. Specifications: 1. Service and maintain Ozone systems in aquarium (6-month contract) x 3; 2. Service and maintain life support pumps at the tunnel tank x 4; 3. Service and maintain life support pumps at the cylinder tank x 4; 4. Service and maintain pump at the two split level tanks x 4; 5. Service and maintain the blowers at the bio-filters x 4; 6. Service and maintain the heater systems (anaconda, tunnel and cylinder/stingray tanks/enclosure) x 7; 7. Service and maintain the R.O system (large system) x 1; 8. Replacing of R.O system membranes x 4; 9. Service and maintain stingray tank pumps 1.5kw x 2; 10. Service and maintain the big softening system x 1; 11. Service and maintain the small R.O. systems x 6; 12. Service and maintain the pumps in quarantine x 4; 13. Service and maintain the heater systems in quarantine x 4; 14. Contingencies (leaks, broken valves, etc); 15. Service and maintain the pumps (1.5kw) at Koi and anacondas x 4; 16. Replace and Maintain all UV sterilizing tubs/lights x 18. Department: Zoo. (Ausschreibung №77884064de)