SKU: 71788151850

API Copper Cu Test Kit for Fresh and Saltwater

$171.00 $190.00
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Description

API Copper Cu Test Kit for Fresh and SaltwaterAPI Copper Cu Test Kit for Fresh and Saltwater API Copper Cu Test Kit for Fresh and Saltwater is used to easily and accurately monitor copper levels in aquariums and ponds to maintain effective copper based fish treatments and ensure healthy conditions for fish and plants. Copper a treatment for many parasitic infections must be monitored in an aquarium or a pond. The copper level can drop too low for the treatment to be effective or can increase to a

API Copper Cu Test Kit for Fresh and Saltwater

API Copper Cu Test Kit for Fresh and Saltwater is used to easily and accurately monitor copper levels in aquariums and ponds to maintain effective copper-based fish treatments and ensure healthy conditions for fish and plants.

Copper – a treatment for many parasitic infections – must be monitored in an aquarium or a pond. The copper level can drop too low for the treatment to be effective or can increase to a point that is detrimental to fish health. Copper is likely even present in your tap water.

The API® COPPER TEST KIT allows you to easily and accurately monitor copper levels to maintain copper-based fish treatments at therapeutic levels, and tests copper levels from 0 to 4 ppm. The kit measures both free and chelated copper, and is for use in fresh and saltwater aquariums, or with ponds.

Sizes: Contains 90 test and includes 1 test bottle, easy-to-ready instructions, glass test tube and color chart

When should I test for copper in my aquarium?
Use the API COPPER TEST KIT to ensure copper levels are healthy for plant photosynthesis and to prevent anemia in fish.

What type of aquarium should API COPPER TEST KIT be used with?
API COPPER TEST KIT can be used to test for copper in both freshwater and saltwater aquariums.

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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SKU: 71788151850

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4.3 ★★★★★
Based on 412 reviews
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Mary F.
Lake Worth, US
★★★★★ 5
The BEST sunscreen I've found
Style: SPF 50, Size: 3 Fl Oz (Pack of 1)
This is my MUST HAVE sunscreen. I've had almost every type of skin cancer (thankfully, caught early), so I NEED good sun protection, especially on my face. I have very fair skin. This product leaves a bit of a white cast, but after a short period of time, that white case is absorbed. The white cast of a mineral sunscreen might look chalky on a person with darker skin. The BEST thing about this sunscreen is I can put it on my eyelids and under my eyes, it doesn't irritate my eyes AT ALL. The other well-known sunscreen I used for a long time really made my eyes sting if a bit got into them. This is my favorite sunscreen of all time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 3, 2025
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Verified Purchase
Nena
Los Angeles, US
★★★★★ 4
Solid mineral SPF with light coverage effect
Style: SPF 50, Size: 3 Fl Oz (Pack of 1)
I’m used to La Roche-Posay’s chemical sunscreens, so this was my first time trying their mineral version. The texture is actually quite nice for a mineral formula. It spreads evenly and doesn’t feel gritty or chalky. That said, it does take a bit longer to fully absorb compared to chemical SPFs. I’m already very pale, and I still notice a slight white cast. It’s not extreme, but it’s there. To be fair, most mineral sunscreens tend to do this, especially those using zinc oxide and titanium dioxide. Interestingly, on my skin it almost behaves like a very light tinted sunscreen. It slightly blurs and softens the appearance of minor blemishes and redness, which I appreciate on minimal-makeup days. It provides broad-spectrum SPF 50 protection and feels gentle on sensitive skin. I haven’t experienced irritation, pilling, or breakouts. It layers reasonably well over moisturizer but benefits from being applied in thin, well-blended layers, which adds some time to my morning routine so it's a little inconvenient. Overall, it’s a solid mineral option with good protection. Just expect a bit more blending time and a subtle cast.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026
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Verified Purchase
Wiscocojo
Omaha, US
★★★★★ 5
Great for pregnancy (or regular use)
Style: SPF 50, Size: 4.05 Fl Oz (Pack of 1)
I searched far and wide for a safe mineral-based sunscreen for pregnancy. I settled on this one and I was not disappointed. It saved my skin from a lot of sunburn this summer! As other reviewers mentioned, it is harder to rub into the skin and can leave a whiteish tint, but that’s a small price to pay for a pregnancy-safe option.
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Reviewed in the United States on September 22, 2025
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Verified Purchase
Roni
Lexington, US
★★★★★ 1
Terrible, look like a ghost
Style: SPF 50, Size: 3 Fl Oz (Pack of 1)
I love La Roche-Posay but unfortunately, I finally came across the first product I truly hate from them. This product is a complete white mask on your face and does not settle in at all. You’ll be walking around looking like a ghost all day and it gave me a mild irritation to my eyes.
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Reviewed in the United States on May 29, 2026
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Verified Purchase
W.Winters
Birmingham, US
★★★★★ 3
Leaves white cast, works okay under makeup.
Style: SPF 50, Size: 3 Fl Oz (Pack of 1)
First time using this sunscreen. I have very sensitive skin and thought since my skin tolerates their cleansers and moisturizers surely it should tolerate the sunscreen. So far so good. It’s very calming on my skin (maybe because of the zinc), but it leaves a noticeable white cast especially if you have dark skin. I wear mine under makeup and have a separate sunscreen from another brand on days where I don’t want to wear makeup. The white cast actually acts as a blank base and helps my foundation to lay well. A tip I learned from makeup artists years ago. Sunscreens that leave a white cast cancels out your natural color and acts as a corrector, concealer and foundation to lay better and look more like skin. Think of it like painting on a blank canvas. The texture is not lotion like and is actually quite thick. make sure to moisturize well before apply this sunscreen. I’ll write an update if I notice any negative issues, but so far I’m content with it because of the purpose I'm using it for.
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Reviewed in the United States on October 23, 2023

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