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Description
Sera Marin Component 1 Ca 250ml[Volume - 250ml]Contains essential calcium necessary for the development of coral skeletons and other invertebrates. It is recommended to use this alongside Sera marin COMPONENT 2 and Sera marin COMPONENT 1 Ca calcium formulated specifically for seawater. The complete series of Sera marin COMPONENT 1 7 is designed for advanced marine aquaristics, providing corals and various lower animals with seven beneficial ingredients that work harmoniously together. Sera marin
Contains essential calcium necessary for the development of coral skeletons and other invertebrates. It is recommended to use this alongside Sera marin COMPONENT 2 and Sera marin COMPONENT 1 Ca - calcium - formulated specifically for seawater. The complete series of Sera marin COMPONENT 1 - 7 is designed for advanced marine aquaristics, providing corals and various lower animals with seven beneficial ingredients that work harmoniously together. Sera marin COMPONENT 1 Ca supplies vital calcium for the formation of skeletons in corals and other lower animals. The optimal calcium concentration in water should range from 400-450 mg per liter. You can easily check the calcium levels using the sera Ca-test. When Sera marin COMPONENT 1 and 2 are combined, they help achieve the ideal pH level found in seawater and maintain the natural balance in your coral aquarium. Dosage: Use the cap as a measuring tool. Always add one capful of Sera marin COMPONENT 1 and 2 for every 100 liters of seawater, allowing a 2 to 3-minute interval between additions. It is important not to raise the calcium level by more than 20 mg/l in a single day.Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 4
super comfortable, not waking up as often as before
Color: Grey, Size: Queen
decided to try these after seeing the tons of good reviews and since they were on sale. also one of my favorite colors in general which is a great neutral shade for bedding, not too bright and not too dull. I ordered a queen thinking my mattress might have been a queen as I previously bought some mainstays walmart sheets. with that brand the fitted sheet in full was way too small. turns out my mattress is in fact a full it is just that mainstays is not good quality or sized right, so this brand the queen is a bit big for my mattress but not too big of a deal. i am not looking for a perfect look, just covering the mattress is the most important.
anyway since getting these sheets in the mail and giving them a run through the wash and dry before putting them on my bed my sleep quality has improved. the sheets are not too hot, are soft and I actually do not wake up as often as before. the sheets are not too thin like other brands and are not thick like flannel either. they are a nice in between. I wonder if they will help keep me cool in the summer, probably since they are actually breathable. I would definitely reccommend giving these sheets a try, worth the money and a good deal on sale. better quality that other store bought sheets.
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Reviewed in the United States on March 16, 2026
★★★★★ 5
Great Sheets for price. Color is great.
Color: Grey, Size: Twin
These sheets were great cost for the product. They are soft and comfortable seeming as if it will be nice for winter and summer nights. Fit perfectly on a twin bed even givning a little extra room to fit mattress and box spring if mattress is not to large. The thread count for comfort and thickness is great. They seem great for the price. I love the color is completely spot on. very elegant
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Great bedding set!
Color: Grey, Size: Queen
Great sheet set and a a super price! Deep pockets make sure your mattress stays cool and the material in soft and comfortable. Cool to the touch as well. A great set at a great price!
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Reviewed in the United States on May 12, 2026
★★★★★ 5
GREAT SHEETS, COLOR MATCHED PERFECT FROM THE PIC
Color: Ice Blue, Size: Queen
I WAS IMPRESSED, THESE ARE NOT SEE THROUGH THIN SHEETS, THEY HAVE SOME SUSTAINS TO THEM. THEY WASHED WELL AND ARE NOT ALL WRINKLED, THEY ARE SOFT AND THE COLOR WAS EXACT FROM THE PIC.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Amazing for the low price!
Color: Grey, Size: Queen
We bought a newer camper that the previous owners put a regular, deep pocket mattress. After trying to fit our regular ones on and popping right off, I went right to Amazon and searched "deep pocket queen sheets". The first one came up with a very low price, I ordered them. They came in in about a day and a half. They were a great color, perfect fit and so soft. Something I would've paid so much more for! They are fabulous!!!
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Reviewed in the United States on May 26, 2026