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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]
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4.6 ★★★★★
Based on 2205 reviews
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Product Reviews
★★★★★ 4
Trixie Flip Board Dog Enrichment Toy – Great Starter Puzzle, Best for Beginner Dogs
Color: Flip Board, Size: Level 2
I’ve been using this with a high-energy, working-breed dog, and it’s a solid beginner-level enrichment toy—especially for dogs new to puzzle feeders.
What works well:
• The design is simple and intuitive. My dog learned the flipping lids and sliding compartments quickly without frustration.
• It’s great for short mental stimulation sessions or slowing down treat time.
• The non-slip base helps keep it in place on hard floors.
Things to consider:
• This is a Level 1 puzzle, so once your dog understands it, they can solve it quickly.
• The compartments are on the smaller side, so it works better with small treats than full meals.
• Best used with supervision if your dog tends to paw or chew at toys.
Best use case:
Ideal for puppies, beginner dogs, or as part of a rotation of enrichment toys. More advanced dogs will likely need something more challenging to stay engaged.
Bottom line:
A well-designed starter puzzle that’s easy for dogs to learn and use. Not the most challenging option long-term, but a good addition to an enrichment routine.
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Reviewed in the United States on March 31, 2026
★★★★★ 5
My rabbit loves playing with this, and of course getting treats!
Color: Turn Around, Size: Level 2
My bunny absolutely loves the TRIXIE Activity Around Puzzle Feeder! It keeps her engaged and mentally stimulated for long periods, making it a great source of fun not just for rabbits, but for cats and small dogs too. The design is intuitive and easy to clean, which I really appreciate—it takes just a quick rinse or wipe-down after each use. Despite regular use, the toy has proven to be very durable and holds up well to enthusiastic play. One of the standout features is that it’s surprisingly resistant to chewing; even with my bunny’s constant nibbling, there’s barely any visible wear. The compartments are just the right size for small treats, encouraging pets to think and interact with it. I love that it adds enrichment to my pet’s routine without creating extra work for me. Overall, it’s a well-made, multi-species puzzle toy that brings a lot of joy to curious pets. It is very quiet during use and doesn't make a noise.
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Reviewed in the United States on June 29, 2025
★★★★★ 3
He was confused, I was amused!
Color: Turn Around, Size: Level 2
This toy was quite well made, the materials are solid and once assembled, its very sturdy! Super easy to put together too. It comes with two kinds of lids for the test tubes, three little holes (intermediate/ difficult) and one big hole (beginner/easy). So the actual toy was really nice.
There was only one problem...for some inexplicable reason...my dog (3 yr/ 20lb/ shorkie) was afraid of it! He's used lots of puzzle / game toys in the past, but for some reason this one weirded him out.
No matter what I did, I couldn't get him to even try moving the test tubes. The farthest I got was having him eat a treat off the edge of a test tube once or twice (hence the video, there's a piece of chicken sitting on the top). Mostly he would just growl at the toy or eye it suspiciously, and then run away. I would describe his overall attitude as agitated skepticism with a hint of annoyance...specifically toward me! (As if saying "what the heck is this thing??")
I will say the customer service was pretty good. And I definitely got some personal entertainment watching my dog run around and growl at the toy that was just sitting there. (:
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Reviewed in the United States on April 27, 2025
★★★★★ 5
Can't beat the price if you have smaller dogs
Color: Turn Around, Size: Level 2
This is my 2nd one, which was bought for my mom's dogs. They absolutely love it when they come to my house. I live that they have to get their nose off the floor to figure it out and that there are more than 1 tube that they have to flip (think about). My only thumbs down isn't a big deal but would be the hard base. The treats fling off this base and can end up anywhere in the room. I think if it wasn't so hard, they wouldn't have to walk away from the activity or have to fight over who get the "reward" (It's usually the other dog waiting to chase where they fly off to). It doesn't flip over unless they run into it which doesn't happen often, although our dogs are all under 15 lbs. Imnsure if a bigger dog were to use this, it wouldn't stand up well and may break. It was easy to put together, and functions very well. Our dogs think this is the most fun toy out of all the interactive togs we have (which is A LOT).
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Reviewed in the United States on April 17, 2025
★★★★★ 5
Amazing!!!
Color: Turn Around, Size: Level 2
This is an amazing mental stimulation toy for my dog! And it’s a perfect one for dogs who are learning. He picked it up right away and loves it! I can’t wait to get the other ones they have. Seriously so amazing. My very active Aussie can spend 30 minutes doing this and not get bored.
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Reviewed in the United States on April 5, 2026
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