I purchased two units
X-large: started December 05, 2012For 220+Gallon Discus tank
Medium: November 30, 2012 for 72 gallon exotic goldfish tank
Water Change source: RODI + Minerals - I have well water in a sodium chroloride contamination area so have to use RODI cause too much salt in water.
220-Gallon: FX5 with bio-and mechanical, and Eccosystems heavily planted refugium wtih filter sock. Also the tank is heavily planted..
Objective: get nitrates to 10ppm or lower, as Discus are very sensitive just about everything. Current water change regime sucks, uses to much eletricity. Also trying to grow discus out so I feed them 4 times per day beefheart, so lot of food.
Stocked: 14 Discus, 30 neon tetras, 75-100 shrimp, 1 affrican frog, and 6 bottom feeder types, 4 small plecos
Water changes: 60 gallons RODI + Minerals 2-3x per week
72-Gallon: 2 aquatop canisters with bio, mechanical, and chemical media, and UV which is turned off. and HOB Eccosystems planted refugium, glass bare bottom tank.
Stocked: 1 Pearscale, 1 lionhead rachu, 1 telescope, 3 orandas, 2 snails, product a lot of waste.
Objective nitrates under 20PPM
Current water changes: 50-60 RODI+minerals gallons twice per week.
After 3 days and first 20ml vodka injection effluent is reading
I am guess the unit is removing about 15ppm nitrate from the inflow. Not goupy bacteria yet but cloudiness from bloom is present.
Medium Progress -
After 8 days and two injections of 8ml vodka the effluent is reading:
The tank appears to be at 40ppm nitrates so it is removing about 35-32ppm nitrates.
Effluent has a white goupy bacteria coating inside of outflow. Effluent also looks a little slow but I have already adjusted today so I will not do it again..
Positives - Appears to be working as expected.
Looking for Improvements-
I find measuring the outflow rate to be difficult for me personally. I am a programmer as a professional so I really try to get exact on measurements, and directions.
I found myself having to measure the 10ml for 33 seconds over and over after adjusting to get close enough.
I calculated that filling a 5ML test vial
Medium: 15.8 seconds 5ML
X-Large 3.8 Seconds 5ML or 7.7 seconds for 10ML
Flow rates: https://docs.google.com/spreadsheet/...mJfOWxzYUxzb1E
I was looking for a meter that could measure the slow rates but could not find anything under a couple thousand bucks.. It would be awesome if there was a reasonably price ($200-300 range) digital flow controller for this flow rate that could automatically adjust based on the amount of clogging.
I saw some medical IV Pumps that will do 0.1 - 999 mL / h but that is not enough flow, and probably would not work with a continous feed. But still they aren't too bad used $45-89 bucks.