I've read this entire thread and find it very interesting. Thank you all for your contributions. I have been concerned about my nitrate levels of about .10 according to my Red Sea test kit. Does the remote deep Sand Bed just act as any other media that the water circulates through. Does the water actually circulate through he lower level of sand? Is it better to feed the RDSB using a spray bar? I am ready to set one up. My current setup includes a 90 gallon mixed reef and about 35 gallon 3 compartment sump / refugium
Thanks Again
Alan
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