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water topup; top-off

  1. Saltwater Aquarium Equipment
    I'm going out of town for a few days - a week or so and need to set up an automatic top-off / top-up system for my 55 gal reef tank. I don't have a sump so all switches will have to go into the tank itself. I was planning on placing a 5gal bucket in the stand as the water source. Can someone...