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It should not be particularly necessary. You may have an interest in maintaining calcium and alkalinity levels because coralline algae will consume them. Depending on the rate of growth your typical water changes may be sufficient though.
They are just different sizes for different purposes. 20oz of magnesium solution is what is dosed when you finish a gallon of calcium and alkalinity. The 1g mix of magnesium is for adjusting your magnesium levels outside of the normal two part dosing schedule (like adjusting your salt mix to make sure it matches before doing a water change for example).
Ideally you will want to dose the Alkalinity when the pH in your tank is at the lowest typically in the morning before the lights come on. After that the calcium can be dosed typically later in the day. Magnesium does not have precipitation issues and can be dosed in bulk at almost any point. Feel free to let us know if you have any further questions!
You can add the elements by hand if needed however a dosing pump will make the process automated and much easier! The 1/2 gallon kit will last well into 1/2 year if not longer depending on the amount of corals. Feel free to let us know if you have any further questions!
These will last forever as long as sealed well and no evaporation occurs. Feel free to let us know if you have any further questions!
The BRS 2 Part Calcium & Alkalinity Starter Package is the easiest way to get started with the 2 Part Solution. The Calcium, Alkalinity, and Magnesium parts each come in pre-portioned pouches that can be quickly added to the included jugs and mixed with RO/DI water. No messing around with measuring cups. This starter package will help maintain Calcium, Alkalinity, and Magnesium parameters in the tank in easy once a day doses. Your corals will be healthier and grow faster. The 2 Part Solution can be automated using peristaltic dosing pumps.
Note: The starter package differs from the total package. The starter package comes with small convenient pre-portioned pouches. The total package is bulk packed containers of the same medias.
Easy to follow By Abraham on 8/25/2016Abraham would recommend this product to a friendInstructions were easy to follow and additives work as expected.
Simple and works well By Travis on 7/9/2016Travis would recommend this product to a friendVery easy to mix. I'm getting great results with the BRS 2 Part. Corals are looking awesome. My sunset montipora has great color and is growing quickly.
Easy to use By Smeac72 on 4/25/2016Smeac72 would recommend this product to a friendGreat product, easy to use. More than what i expected. You get a lot of product for your money, well worth it. will buy again.
Good product By Allen on 4/17/2016Allen would recommend this product to a friendUsing the BRS 2 part on both my tanks. The pump tops work well. I bought an extra for magnesium. The kit comes with two that most people will use for alkalinity and calcium. My only complaint is the pump nossle could point down a bit more. I regularly pump calcium or alkalinity on my fingers when I am pumping out a large dose.
Don't leave in the garage By Bryan on 3/11/2016Bryan would recommend this product to a friendVery convenient. Just add water and mix to the jug then shake. No measuring. Just don't leave the magnesium pouch in the humidity. It looks like it's sealed but mine came out soupy.
Excellent Product By Ron on 2/12/2016Ron would recommend this product to a friendVery easy mixing instructions to follow, The mixing containers the funnel and measuring cups are excellent quality for the money.
ease of use By Ruben on 1/11/2016Ruben would recommend this product to a friendcannot go wrong with this kit if you are starting out or seasoned reefer
easy By David on 9/9/2015David would recommend this product to a friendi don't like measuring, never seem to have the right size measuring device.
Good Purchase For Noob By Jeffrey on 8/23/2015Jeffrey would recommend this product to a friendI'm new to dosing, and mixing everything was a little confusing so I bought the pre-mix package to start off. It's really VERY simple so next time I'm just buying in bulk. It all works well and keeps my levels consistent. The jugs work well with the pumps. Once again, BRS succeeds in making reefing as easy and affordable as possible. Customer for life!
A must have for reef tanks By Acameron2 on 7/16/2015Acameron2 would recommend this product to a friendBought this starter kit so I can attemp to keep my parameters more stable for sps corals in my biocube, right after getting the dosage dialed in I bought a few acropora frags and so far I have great polyp extension and encrustation after a month of usage. Btw this kit is dummy proof, I've never dosed before this and now I can't imagine not ever dosing again judging by my results so far.
Great for a beginner By Braulio on 7/10/2015Braulio would recommend this product to a friendJust as others have stated, this 2 part starter kit is great! First time I dose in any of my tanks and the growth is amazing. Instructions are straight forward and with tips from their video, this has been a awesome purchase.
Excellent product By Yeti812 on 4/19/2015Yeti812 would recommend this product to a friendWell written instructions. Everything you need to get started.