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aclman88 posted a topic in Water ChemistryHey guys and gals, I have a 5 gallon pico (link is in my signature) and have noticed that the Alk has been running a little on the low end. Coral consist of softies, LPS and a couple SPS frags. I recently switched to Tropic Marin Pro Reef. My Alk is testing in around 6.5-7.0 after water changes, which is a little lower than TMPR mixes up to. (~7.7) I was using Instant Ocean Reef Crystals with great success, but this is supposed to mix up at a much higher Alk and the batch I recently mixed and tested is only hitting high 7s in Alk. I don't like the inconsistency I am seeing in this batch. I also realize that if I continued using Reef Crystals for my usual one gallon water change, and it is mixing up at advertised 13 alk, my tank would jump from 6.4 to over 8 in a single water change, which I think is too much. Two weeks ago, I tested the Alk daily using a Hanna checker and found about .1 Alk drop every two days. Below is the testing results I performed this past week after a water change; it looks like the tank is using up about .1 Dkh Alk daily. All tests were done with the salifert, and I used a hanna checker a bunch of the days as well. Freshly Mixed Tropic Marin Pro Reef Levels: Alk - 7.7 Cal - 425 Mag 1305 3/29 - After 25% Water Change (~1 Gallon) Alk - 6.8 Cal - 395 Mag 1245 3/30 - Alk - 6.7 Cal - 395 Mag 1260 3/31 - Alk - 6.5/6.6 Hanna Alk - 6.7 Cal - 395 Mag 1260 4/01 - Alk - 6.5 Hanna Alk - 6.4 Cal - 395 Mag 1275 4/02 - Alk - 6.4 Hanna Alk - 6.3 Cal - 385 Mag 1245 4/03 - Alk - 6.4. Hanna Alk - 6.2 Cal - 395 Mag 1245 4/04 - After 25% Water Change (~1 Gallon) Alk - 6.55. Hanna Alk - 6.7 Cal - 395 Mag 1305 I don't think that water changes will keep up with this drop since after a water change I am still below 7 Dkh. My question is, should I be dosing this tank or just perform larger water changes to keep up with the demand? I already have the ESV B-Ionic two part system, so if I am dosing I will be using that. If so, should I be performing a couple larger water changes first to get parameters closer to what my salt mixes up to? Any advice or experience dosing such a small tank would be really great. Thanks!
Marine Depot posted a topic in Marine DepotHow to Use Hanna Checkers to Dial In Your 2-Part Dosing RegimenVIDEO: A beginner’s guide to maintaining calcium & alkalinity