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In my experience a feed pump is necessary. A reactor can easily lose suction without it and will then no longer work until the situation is corrected. A little pressure also makes it easier to maintain a steady flow rate.
A pH probe port can be purchased from Home Depot or most other hardware stores. The hard part is then finding a large tap to thread a hole for the fitting... https://www.homedepot.ca/en/home/p.f...000124751.html
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"We shall dive down through black abysses... and in that lair of the Deep Ones we shall dwell amidst wonder and glory forever." - H.P. Lovecraft Old 120gal Tank Journal New 225gal Tank Journal May 2010 TOTM The 10th Annual Prince George Reef Tank Tour |