Gunnar - Tank Sense

10/07/2026

I have a Male Bluejaw Trigger arriving today for sale. Accidentally ordered two males. Let me know!

09/29/2026

I get a lot of reqests for specific orders so I’m opening up custom requests to the local community! Whether you’ve been hunting for a specific show piece or just need to restock your cleanup crew, I can source it directly for you.

DM me what saltwater fish, freshwater fish, corals, or invertebrates you’re looking for and I’ll check availability and let you know the price.

🐠 Saltwater Fish & Inverts
🪸 Frags & Corals
🐟 Freshwater Fish & Inverts
📦 Dry Goods & Supplies
🚗 Delivery Or Pickup
📍 Located In Sioux Falls

Order Deadline: Looking to get everything lined up by Friday October 2nd, so I can place the order to be delivered the following week.

Livestock inspected upon arrival but not removed from bag, if needed will be floated for temperature acclimation.

Your order can be delivered for a fee, or picked up SE Sioux Falls.

Drop a comment or send me a DM with what you're looking for!

09/21/2026

What started as an emergency leak call turned into a full transformation!
A customer reached out about their beloved 25-year-old hexagon tank that sprang a leak and urgently needed to be resealed. After doing a full reseal on the tank, they noticed the original wooden stand was severely degraded from water damage and age. They asked me to build a custom stand from scratch. I’m beyond happy with how it turned out. Solid, secure, and ready to show off the classic, unique tank again!

Send a message to learn more

08/25/2026

Here's a speed run of a 6-Foot Reef Tank Build I did a couple of years ago. Raw 2x4s to a custom 6-foot high-end reef setup! 🛠️🐠 From rebuilding and finishing the stand, custom plumbing and automation, to setting up the ultimate reef environment, here is the full step-by-step build compressed into quick clips. Digging through the archives, definitely one of my favorite builds I've done—let me know what you think of the final look in the comments!

08/03/2026

One of our super friendly long nose hawkfish always coming to say hi perching on anything he can find. Such a fun fish to keep

07/26/2026

For Sale: Premium 140g Saltwater System - Complete Eheim Incpiria 530 Setup + High-End Gear & Livestock

This is a client's tank of mine; I set it up and have maintained it weekly for the last two years. Complete, turnkey saltwater aquarium setup. The tank is currently up, running, and in excellent condition. This is a top-of-the-line European glass system with premium equipment throughout.

Tank & Stand:
- Eheim Incpiria 530 (~140 Gal Glass Tank) with matching high-gloss white cabinet
- Custom acrylic/mesh lid
- Trigger Systems ATO reservoir & glass sump

Lighting & Flow:
- 2x Kessil A360X Tuna Blue LED Lights with mounting arms
- 1x Jebao Gyre
- 2x Jebao Powerheads

Sump & Filtration:
- Klir Filter Roller
- AquaReady Protein Skimmer
- Sicce UV Sterilizer
- IceCap Algae Turf Scrubber
- Eheim Return Pump

Livestock & Aquascape:
- 100+ lbs Live Rock
- 100+ lbs of Live Sand
- Around 15 Healthy, Vibrant Fish
- Freshly Stocked Cleanup Crew
- Various established corals

Price: $3,000 OBO for everything.

I will help, but the buyer is responsible for transport. Please bring your own buckets/totes for livestock and rock, along with at least 2 strong adults to lift the tank. Located on the south side of Sioux Falls.

04/15/2026

Got a call to take this neglected Biocube off someone's hands—they thought it may be trash. Not in my eyes!
I spent some serious time deep-cleaning and turning it around, and now it’s a beautiful little reef for my daughter’s room. It’s amazing what a little elbow grease can do for a tank someone previously gave up on.