






💧 Transform your pond into a crystal-clear oasis — don’t let murky water hold you back!
API POND SIMPLY CLEAR is a 16-ounce dual-action pond water clarifier that quickly clears cloudy freshwater ponds by clumping suspended particles and breaking down sludge with beneficial bacteria. Safe for fish, plants, pets, and wildlife, it requires bi-weekly dosing for optimal results. Trusted for over 50 years, it’s the go-to solution for maintaining a healthy, visually stunning pond environment.













| ASIN | B000HCQFQ4 |
| ASIN | B000HCQFQ4 |
| Best Sellers Rank | #24,014 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #36 in Water Garden & Pond Treatment |
| Brand Name | API |
| Color | Clear |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,732) |
| Date First Available | June 8, 2005 |
| Date First Available | June 8, 2005 |
| Department | Unisex-Adult |
| Department | Unisex-Adult |
| Directions | Shake well. Use dosing cap on bottle. Initial dose at spring start-up, and end of season, is 60 ml (4 Tbsp.) per 250 U.S. gallons (946 L) of pond water twice a week for 2 weeks. As a maintenance dose, add 30 ml (2 Tbsp.) per 250 U.S. gallons (946 L) of pond water every 2 weeks. |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 2 x 2 x 5 inches |
| Item Package Dimensions L x W x H | 8.46 x 2.36 x 2.36 inches |
| Item Weight | 0.52 Kilograms |
| Item model number | 248B |
| Item model number | 248B |
| Manufacturer | Mars Fishcare |
| Manufacturer | Mars Fishcare |
| Manufacturer recommended age | 1 month and up |
| Material | Plastic |
| Model Name | POND SIMPLY CLEAR, 16 OZ |
| Number of Items | 1 |
| Product Dimensions | 2 x 2 x 5 inches; 1.14 Pounds |
| Size | 16-Ounce |
| Style | Pond Treatment |
| Target Audience Keyword | fish;algae-eaters; betta-fish; bottom-feeder-fish; cichlid-fish; goldfish; invertebrate-fish; mollusks; octopuses; rays; sharks; snails |
M**K
Great product
The water in my small pond was completely green. The old goldfish weren't happy. I wasn't sure anything would clear it up. Tried this product per the recommended amount. Didn't really noticed any improvement. Decided to double or even triple the recommended amount. The pond started clearing up within two days. Kept adding small amounts and now the pond is crystal clear. I can tell the old goldfish are happy again. This stuff worked wonders on my pond, but needed extra large dose to get it started.
B**N
Safe and effective
It took a little over a week, but I now have really clear water in my fish tanks. I put a little less than a capful in a 10 gallon tank, and the water has been clear since. It’s natural, and with as little as I need it will last a very long time.
R**S
Works good and does clear the water up.
The product does work pretty good. But i didn't see the pond ever get completely clear. Definitely made it better. and i will continue to purchase.
J**N
Good
Happy
B**R
Clear pond
Great for ponds
S**S
Not as effective as I had hoped.
In order to get results you have to use much more product than the directions say.
A**D
A Fish Keeper's work is never done, but API Products help.
I have used almost all of the API products since we started keeping koi almost a decade ago. All the API products can be used together, if you have multiple issues. You need to be sure you are treating your problem with the right product at the correct dosage. That is why API has a product for every type of problem and explicit instructions. We have expanded several times, and we now have a 10,000-gallon pond. In our system we have a pump, filter, UV light, 2 bottom drains, a skimmer, and a sediment tank. I take water quality measurements every week, and occasionally issues will arise, even though we have a great system. By now you might be thinking I have stock in the API company, and maybe I should. I only recommend their products because this is what I have found works over trial and error. First, be sure you have the correct product for the problem. I have actually used this product once before, and thought it didn’t work. The reason it didn’t seem to work is I was not using the correct product for the problem at that time (this was in my early days in keeping koi). I needed API Ecofix (see my review if you are having issues with Nitrates and sludge), not Simply Clear. There is a subtle difference between the 2 products, and deciding which is best can be confusing as the descriptions use some of the same words. I’m using Simply Clear to clump particles and reduce the phosphate in the pond. I know the pond has a phosphate problem from testing the water. Definitely test the water before you put in a product, so you know how drastic your problem is at that moment. Second, no matter what product you are using, be sure to have an accurate measure of how much water you have in your pond and follow instructions for the correct dosage. Most people make mistakes in dosage because they don't know the volume of water in their pond. There are websites that help you calculate your pond volume that are easy to use. Many people don’t realize how the smallest increment of wrong dosage will negatively impact the results and possibly their fish. Third, use the product for the correctly length of time. Most products for your pond, no matter your problem, are not one and done. Using some products for fish is like humans taking antibiotics…you might need to dose more than once and finish out the entire length of time for dosage. This product requires you to dose your pond twice a week for two weeks until you get to the maintenance dose. You are building up a colony of beneficial bacteria with this product. Hopefully, reading this review is helpful to you and your fish. Feel free to ask me questions.
D**S
Needed mostly in the summer
I keep water sliders and they're rather filthy so it's important to clarify the water especially in the summer
J**Y
This Product Works. The Pond green Algae went, the pond cleared. Thanks
A**Y
Great and nice to have a natural product to keep the pond healthy!
B**A
I needed to enhance water clarity in one 2100-gallon pond another of around 300 gallons. I'd had a very bad experience with a different product from another company and lost all my baby fish, along with injuries to my adults (damage to their slime coating). But the water badly needed clarifying so I could see exactly what was in there. Simply Clear worked beautifully! There was no fish loss. I could see right to the bottom of the larger pond. The smaller one is in a shady area so it's always dark but the water flowing through my little aeration hose is clear too. I will use this again and buy more when it runs out.
T**X
Cleared up my small pond in a few days. I only need to add 6ml at a time so will last quite a while.
H**R
kept the pond relatively clear until the heat started rising and then the algae bloom took over.
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