Q: "What is the difference between these two products? How much do I need for my pond? Thanks. Todd"
Answer: The products are identical in composition. The difference is that the second one has a safe blue organic dye. Both formulas of pond water cleaner contain a broad spectrum of beneficial bacteria and microbial nutrients. The water cleaner removes excess nutrients such as phosphates, nitrates and ammonia from water, breaks down sediment, colors water an aesthetically pleasing shade of blue, improves water clarity and water quality. Both are safe for all aquatic life including fish, plants, and invertebrates. You need to measure your pond and determine approximately how many gallons of water are in it. Unfortunately, I do not currently have this in our Iowa warehouse. The best information I can find is to put in 4 Gallons Per Acre Foot (325,000 Gal) As A Shock Dose, 2 Gallons Per Acre Foot (325,000 Gal).
Fountain Protector by Care Free Enzymes 4 oz. treats up to 5 gallons of water in small fountains with just one capful. Made in the USA, the directions say to use weekly. This is a non-toxic, biodegradable, natural enzyme product that uses food grade enzymes and is free of bacteria. It prevents stains, sludge, mineral deposits and organic contaminants for naturally clear water. It is safe for birds, pets, wildlife and humans. The only caution has to do with drinking the product undiluted and keeping it out of one's eyes.
Fountain Clear for Bird Bath and Pond 16 Oz. is another preventative option for cleaner bird baths and ponds. This formula prevents organic contaminates from forming (ie: crusty white scale deposits, iron, copper, hard water stains) using two unique technologies: one helps prevent the buildup of stains, and mineral deposits on the birdbath surface; the second uses bio-enzymatic activity to keep water clear and free from the organic debris that can make the water cloudy. For larger water fountains and indoor/outdoor waterfalls, Fountain Clear is also a great choice. One capful treats 1 gallon of water. No need to dilute. Just pour in. 16 ounce bottle of fountain clear treats 6400 gallons of water. Safe for fish, birds, animals, even safe for humans! From Ecological Laboratories.
Clear Water Jumbo Bale Barley Straw for Ponds, 5000 GAL contains natural enzymes that keep pond water clean, too. One gallon treats 5000 gallons of pond water. Just float this on your pond. Choose the correct size of barley straw according to the size of your pond. There are several sizes to choose from including Clear Water Mini Bales Barley Straw 500 Gal. 2/PK with each bale treating 500 gallons of water and the Clear Water Super Mini Bales Barley Straw 1000 GL 2/PK with each of the bales treating 1000 gallons of water. The barley straw bales need to be replaced every 6 months. Since it takes about a month for the action to occur, the recommendation is to add sufficient barley straw bales every 5 months. Then water stays clear.
I hope this answers your question.