Correct nutrient imbalances and clear cloudy water. Maintaining an established tank with Algone helps prevent many frustrating problems related to bad water quality. Algone helps keep the aquarium crystal clear.

I have never seen a negative comment on the product other than just personal preference. Seems like nobody has had a bad experience with it. After a quick look on forums, I see there are many different opinions about the Purple Up.

Reef Advantage Calcium™ is equivalent to dry Reef Complete™. It is a non-caustic (pH 8.3-8.6) optimized blend of ionic calcium designed to restore and maintain calcium levels found in natural seawater. Calcium and carbonates are essential to all coral growth. If either becomes deficient, coral growth will cease, followed by a rapid decline in coral health.

SeaChem Marine Buffer is designed to adjust pH to 8.3 and maintain both pH and alkalinity(KH). It is formulated not to disrupt the natural ionic balance of marine water with prolonged use. Marine Buffer contains a natural balance of sodium, magnesium, calcium, and potassium salts of carbonate, bicarbonate, and borate, formulated for enhanced and lasting buffer capacity at pH 8.3 without sacrificing calcium. It dissolves readily and does not obscure water clarity.

Waste Control helps clean gravel, power filters, decorations, and interior surfaces in your fresh or saltwater tank. It instantly activates to break down major aquarium pollutants, reducing organic waste resulting from overfeeding, fish waste, leftover food, and by-products of other decaying material.