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Maxspect Jump MJ-GF2K Gyre (used 2mths) - $170 Tunze Care Magnet Long Care Booster (Like new) - $30 Salinity Refractometer (Used) - $20 Oceanlife Amin Extra (98% left) - $28 Orphek azurelite Flashlight (like new) - $28 Redsea Nopox 500ml (90%left) - $20 Redsea AB+ 500ML (BNIB) - $30 LTC corals & plant cyanoacrylate aquarium glue - 50g (BNIB) x 3 - $30 REDSEA Trace color A,B,C&D - $50 IODINE+ (500ml) - 75% LEFT POTASSIUM+ (500ml) - 75% LEFT IRON+ (500ml) - 75% LEFT BIOACTIVE ELEMENTS (500ml) - 75% LEFT REDSEA Foundation A,B & C - $20 CALCIUM+ (250ml) - 94% LEFT KH/ALKALINITY (250ml) - 98% LEFT MAGNESIUM (250ml) - 96% LEFT Location: 730501 Sent from Singapore Reef Club mobile app

I'm using Alkatronic, Mastertronic & Apex on my system. Each does a different thing. Specifically for Mastertronic, it simplifies the testing regime. One key factor in this hobby is to prevent mistakes or at least to catch it early. Both the Alkatronic & Mastertronic do this effectively. As I've often said, what gets measured gets done. One nice thing about the Mastertronic is that you can set the interval to whatever you like and not forced to test too regularly. Interval for each parameter can be different depending on the needs of the tank. Accuracy so far is spot on.

Quick bump. 300.