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    Timer for powerhead

    I added a power head to my 75 today. Instead of let it run 24/7, I plugged it to a timer making it run on and off at different time to see if the corals like it. Some mechanical timers can do the same.
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    DIY additive dosing

    The parts are air tubing connector and valve. The downside is the flow rate changes as the water level drops, need to adjust the valve periodically.
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    Hello, happy holiday!

    I am new at CR. I love this website!
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    My 20G tank

    This tank was started about 6 years ago, use a 10 g tank to hide the skimmer and heater. A Yellow Tang was put in the tank a month ago to clean up the caulerpa that grows like crazy.
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