Deep Blue

How long did you hope it would last? This is a daily product, just like ESV's B-ionic or TLF's C-Balance. You dose it daily.

I wrote up a brief statement about B-ionic years ago and put it on melevsreef.com:

This product maintains Alkalinity, Calcium and pH levels when dosed daily. It is recommended to dose it early in the morning when pH is at its lowest, and it should be dosed slowly in an area of high flow.

When I dosed my 29g and my 55g, I would pour the correct dose of Part 1 very slowly over 15 seconds. Once done, repeat with Part 2 the exact same way. If it is dumped in at once, the concentrated solution is super saturated in one spot temporarily and may even precipate out of the water - which would make the dose ineffective or even defunct. I used B-Ionic for 2 years with excellent results, and it will definitely promote coralline algae growth.

To the left, you can see quart bottles of each part. This is the best way to dose the tank, using the small dosing cups that come with them. So buy a set from your LFS or online. However, purchasing it by the gallon or even the five gallon bucket saves you the most money. I would either buy it by the bucket for myself, or share the buckets' volume with a couple of people in our club to spread out the cost of product and shipping. Refilling the quart bottles once a month worked great.

Have you thought of using a DIY two-part? You can buy the dry chemicals from most fish stores (heck, even Home Depot) and just mix them with RO/DI. For the gallon jugs of B-Ionic I would pay 35 bucks or so up here in British Columbia. But you could reasonably make twice as much for one third of the price using raw chemicals.

All alk and calc supplements should deplete at what ever rate your tank uses them regardless of the manufacturer. Maybe Brightwells has a lower concentration. IMO, the cost savings of DIY far outweigh the 20 mins it takes to make a month's worth of two-part. All you need to do is Shake it!