[kedur31]

First we measured the time required to eat the scale deposits off a collection of used joker valves. Testers diluted each solution to manufacturer recommended ratios and immersed a section of joker valve in the solution and observed. The valve sections were moderately agitated every 30 minutes, and the valve was considered clean when all of the deposits came off with agitation or a very light brushing with no detectable resistance. Muriatic acid was used as a control on one section from each joker valve.

[The Madhatter]

In minutes, it was obvious which chemicals were fast acting and which chemicals were aluminum-safe. The Barnacle Buster, Sew Clean, muriatic acid, and Rydlyme samples immediately began bubbling wherever lime was present and on the aluminum coupons. The other chemicals-CLR, Lime-A-Way, oxalic acid, and vinegar-also caused bubbling on the lime deposits, though less vigorous, and very few bubbles appeared on the aluminum coupons.

[omaryamfinleyy]

If we were forced to pick an overall winner, we would give the nod to Sew Clean for its combination of speed, reasonable corrosion rates, and relative safety. For descaling engine cooling passages, CLR is a safe bet, following the engine manufacturers guidelines.

[Nefario]

We recommend a Hammerhead Marine Descaler Flush every 100 hours, or twice a year for any engine running in warm, calcium rich waters. This is a revolutionary change to outboard marine engine maintenance which has come about through Bright Bay’s next generation chemistry. Only Hammerhead Marine Descaler is made with aluminum safe cleaning agents designed for today’s high performance marine engines. Now you can even descale your aluminum outboard engine safely!

[alenmatias]

The attached pictures were taken of a 4 stroke outboard engine in Key West. The block cracked with less than 200 hours because marine scale had restricted water flow for engine cooling. Because water flow and scale buildup are a maintenance item, damage was not covered under the manufacturer’s warranty on the $20,000 motor. A marine descaler would have prevented this damage.

[marcusaurelius]

When compared to other brands such as Rydlyme Descaler and Barnacle Buster, we found Hammerhead Marine Descaler to be as effective, less expensive and safe for use on aluminum outboards.

[CoinOfLuck]

Re: Removing Heavy Calcium Scale more

[Lord Juan]

Re: Removing Heavy Calcium Scale [links]

[user88]

I glass beaded mine, and it took the scale and barnacle build up completely off down to the bare aluminum. Then repainted. If you do this tape off and cover any areas you don't want exposed to sand, it gets everywhere, but it is the best method I've used.

[Delia]

Re: Removing Heavy Calcium Scale

[concetxos01]

If your Keurig indicates that it’s time for a descaling, then you won’t find better than the Keurig Descaling Solution, Amazon’s #1 best-seller in coffee and espresso machine cleaning products. It quickly removes mineral buildup without leaving any odors behind. It is easy to use and can restore your Keurig brewer to like-new conditions. It can even help extend your brewer’s life. This is the only Keurig approved solution, so you know it will work well in your brewer. It is backed by outstanding online reviews, including more than 700 five-star reviews on Amazon. more

[kupan787]

The De'Longhi EcoDeCalk Natural Descaler for Coffee Machines works quickly to dissolve limescale deposits. The all-natural formula can help ensure your coffee machine works optimally. The company claims that laboratory tests prove that it’s also up to three times more effective than traditional descalers. It is frequently recommended online for all types of coffee machines. [links]

[Confiscative]

A good descaler can make your machine work optimally again and can even extend the life of your machine, so you get a better value out of it. In most cases, you should use a descaler about once every three to six months to preserve your coffee maker.

[david1211]

Descalers are chemical agents used to remove calcium deposits, limescale, and any other non-soluble sediments from any metal surfaces in contact with hot water. They release hydrogen ions when dissolved in water, which eat away at the scale and deposited minerals. They are commonly used to safely clean coffee and espresso machines, boilers, heat exchangers, water heaters, kettles, and septic tanks.