Kingfish is great. I was in a bind and they stepped up and helped me big time. Fair prices and…read morehonest, friendly staff. Thank you kingfish for a job well done!!

From the owner: Aquarium Supplies and Service Design of Aquariums for Home…read moreor Office Salt Water Freshwater Reef Systems All other Pet Supplies with service accounts get Free Delivery

Reisa, Joel and Alexa have been fantastic, knowledgeable, helpful and a pleasure to learn from and…read morework with. My wife and I have been amateur Aquarist for years with Koi ponds and Freshwater aquariums. We were cycling another aquarium for Cychlids and went to Keepin It Reef, best decision we have made in years. In the end Reisa asked if we really wanted Cychlids, because our desire and discussion was really better suited for a change to Saltwater. Reisa and Joel patiently walked us through the pros and cons and that afternoon we had drained our aquarium and we were cycling Saltwater. We visited several times for free water checks and to pick their brains as we "patiently " waited for the tank to cycle. Well today is my wife's birthday and we visited again with hopes that our tank had cycled to a point where it was safe to introduce the first fish. Reisa, Joel and Alexa confirmed that the tank was there and we are so excited to welcome our first pair of Clownfish. If you are looking for a well stocked store with a knowledgeable team that have the patience of a Kindergarten teacher, but the expertise of a professor...then look no more. Keepin It Reef is that Aquarist gold mine.

Friendly and knowledgeable staff! They have an incredible selection of corals and gear.read more

Pro: Excellent knowledge and depth of service. Wide selection of excellent fish and plants and…read moreaccessories. Tommy has a national reputation at tank-scaping competitions. Con: His website looks slick with fast auto-changing slides, but is incomplete . Click 'Fish' and you only see Shrimp, yet he has some of best fish species and quality in Denver. No invertebrates shown yet. Need to visit in person or call.

Avoid this place at all costs. Tiffany and Tommy are an absolute nightmare. I spent over $700 and…read moreit was a terrible experience, they are defensive and argumentative. Horrible place...STAY AWAY!!!!

Helped us setup fish tank. We got a variety of fish and plants. He also taught my son how to take…read morecare of he tank.

Fish Ninjas has been incredible to work with! Aidan helped me set up my very first aquarium, and a…read moresaltwater one at that. He guided me through every step, from choosing the right tank size to selecting compatible aquarium mates and equipment. I've never met anyone who knows so much about sea life. His passion for his work truly shows; he's a genuine aquarist. Aidan is professional, caring, and mindful of budget, creating a step-by-step plan that made it easy and affordable to build the tank over time. I plan to have him back every two weeks to make sure my first aquarium is a success.

We have had Reef Encounters take care of our fish tank in our business lobby for quite a few years…read morenow. The owner and the people that work with him are wonderful! They take great care and pride in cleaning and maintaining our fish tank and fish. I would recommend them to anyone who was inquiring about fish tanks and/or fish. The fish they supply are healthy and friendly and have become a hit to our patients and family members. We have had a few of the fish for many years now. Wonderful business!

From the owner: At Reef Encounters, we offer a wide variety of aquarium services. We are almost always able to…read moreaccommodate our clients needs without jeopardizing the health of the animals, which is our primary commitment. We can work with you and your builder or contractor to create a built-in aquarium that is as custom as you want or set you up with something made ahead of time that can be placed anywhere in your home of business. Call us today for more information.

I can't say enough good things about this fish store and the incredible people who work there. When…read moremy tank unexpectedly sprang a leak, I was completely overwhelmed and stressed. It felt like everything was happening at once -- and I truly needed guidance, reassurance, and kindness in that moment. Love was absolutely amazing. Not only knowledgeable, but genuinely compassionate and patient. I never once felt rushed or dismissed -- just supported. Rumi also went above and beyond, answering my emails almost instantly and making sure I had the information I needed right away. That level of responsiveness made all the difference during a stressful situation. What could have been a total disaster turned into a reminder that there are still businesses that truly care about their customers. Their kindness, expertise, and willingness to help meant more to me than I can express. If you're looking for a fish store that treats you like family and stands by you when things go wrong, this is the place. I'm incredibly grateful. They've also given me piece of mind for my future vacations

Zero if I could. What an awful experience. The CO owner lied to me, she told me she could work with…read moreme on a dead fish, I should've known that it was too good to be true. Having driven 45 minutes to the store with my water sample, which I tested against test strips, don't buy those, I was told the phosphates were too high. They don't include phosphates as a red flag unless they're going to deny you. My nitrate was too high? Nitrate is a normal part of a tank cycle. I've never qualified buying new fish based on having to do a tank change the day before purchase. And phosphate! Serious? Do you even sell that test kit? I've never seen it before. After spending $500 in one week you could do me the courtesy of saying "bring a water sample, it doesn't matter we're not giving you a thing." Notes: they are super friendly and helpful when you're buying something. Just don't expect much. They had a dead fish in one of the tanks that my son pointed out that had been there for at least a day. At least that's what the pleco was thinking. Now, find the tank. They have a 48 hour doa policy. They won't budge, trust me. Ask my seven year old who spent $35 on a butterfly pleco only to have it die within a week. $17.50 would have been enough for me, more than fair I said. Finally, even if you live in Elizabeth or Parker, and you are five minutes away from the store, drive the extra 45 minutes to Wheat Ridge and go to The Fish Den. Tell Michael Jason sent you. They have a better rating than MC Aquatics. Here are my readings according to an API freshwater master test kit ($40 at petsmart) Ph 7.4 High range pH 7.8 Ammonia 0 ppm Nitrate 0 ppm Nitrite 0 ppm See the pic below. Finally Phosphates: that's a joke. Good luck knowing that. You're welcome. Next time you tell someone nitrate is a 39, make sure that you tell them what the safe range is. And to think, you guys normally charge $6.00 for a water check. Buy your own test kit and save yourself the headache. Date of incident, June 17, 2025 Water sample from the same day.