All Posts

Custom aquarium install photographed on site by Marine Concepts, showing the finished look of a built-in wall aquarium

Built-In Wall Aquariums: What to Know First

A built-in wall aquarium is framing, clearance and wiring before it is glass. Here is what has to be settled before anyone opens a wall.

Dec 8, 20257 min read

Aquarium scene with fish swimming among rockwork, illustrating a stocking plan for a Chicagoland freshwater tank

Best Freshwater Fish for Chicagoland Aquariums

A working stocking list for local tanks: adult size, temperament and group needs for the best freshwater fish, plus the species we steer people away from.

Dec 8, 20257 min read

Photo of an established aquarium display, the kind of tank that needs steady saltwater aquarium care through every season

Year-Round Saltwater Tank Care in Chicago

What a marine tank actually asks of you across twelve months in Chicago: the constants, the heating-season shifts, the summer load and the annual jobs.

Dec 8, 20257 min read

Reef aquarium scene with fish swimming above coral-covered rockwork in a custom saltwater display

Hardy Saltwater Fish That Do Well in Custom Tanks

Not every fish sold as beginner-friendly is one. These are the hardy saltwater fish that handle real home swings, with tank sizes and the caveats that matter.

Nov 28, 20257 min read

Home aquarium scene with fish and corals under even lighting, the kind of display a steady service routine keeps stable

Aquarium Maintenance Checklist: Weekly to Seasonal

Work through this aquarium maintenance checklist week by week: what to test, what to clean, what to replace, and which jobs only matter once a season.

Nov 28, 20256 min read

Freshwater aquarium scene with dense green plants and driftwood under bright lighting in a home display

Planted Freshwater Aquarium Care in Chicago Homes

Light, CO2, fertilizer and trimming decide whether a planted tank thrives or turns into an algae farm. Here is how we approach planted aquarium care in Chicago homes.

Nov 28, 20256 min read

Freshwater community aquarium scene with small hardy fish among plants, the kind of low-upkeep display we set up

Low-Maintenance Freshwater Fish for Busy Homes

Hardiness beats color if nobody is home to fuss over the tank. These low maintenance freshwater fish tolerate wide temperatures, hard water and the odd missed week.

Nov 28, 20257 min read

Established freshwater aquarium scene with clear water and healthy fish, the result a properly cycled filter delivers

Freshwater Aquarium Cycling: A Step-by-Step Guide

Aquarium cycling is a bacterial process with a schedule and real numbers. Here is the ammonia, nitrite and nitrate sequence week by week, and how to know a tank is ready.

Nov 28, 20257 min read

Aquarium scene with clear water and healthy fish, the clarity a well-managed freshwater tank holds between services

Cloudy Aquarium Water: Causes and Fixes That Last

Cloudy aquarium water has four common causes and each needs a different fix. Here is how to tell a bacterial bloom from particulate haze, green water and tannins.

Nov 28, 20257 min read

Product photo of the IceCap in-sump UV sterilizer, the lamp housing that sits inside an aquarium sump

IceCap UV In-Sump Sterilizer: When It's Worth It

A UV sterilizer treats only the water that passes through it. Here is what the IceCap in-sump unit fixes, what it leaves untouched, and how flow rate and bulb life change the result.

Nov 25, 20257 min read

Custom corner aquarium built and installed by Marine Concepts, fitted neatly into the angle of a room

Custom Aquarium Ideas: Shapes, Layouts and Placement

Peninsula, room divider, corner, cube or tall and slim: here is how the common custom aquarium shapes behave in a real room, and which one suits the space you have.

Nov 25, 20257 min read

IceCap FP-200 flow pump shown with its magnet mount and controller, the parts included in the box

IceCap FP-200 Flow Pump: Setup and Real Flow

The IceCap FP-200 is rated for up to 4,755 gph, but the number on the box is not the flow your corals feel. Here is how to size, mount and tune one properly.

Nov 23, 20257 min read

Mixed reef aquarium under an LED fixture, with corals arranged from the sand bed to the top of the rockwork

Reef Lighting Guide for Chicago Reef Tanks

PAR targets, fixture coverage, mounting height, photoperiod and a six-week acclimation plan: the practical side of reef lighting for a mixed reef tank.

Nov 15, 20257 min read

Reef aquarium scene of corals, rockwork and open sand, the kind of habitat a cleanup crew works across

Natural Pest Control: Shrimp, Crabs, Snails and Conchs

Aiptasia, bubble algae, hair algae, detritus and film each have a different eater. A pest-by-pest guide to aquarium pest control with invertebrates.

Nov 15, 20257 min read

Reef aquarium scene of corals and rockwork in a warm, softly lit room during the winter months

Reef Tank Stability Through a Chicago Winter

Forced-air heat drives evaporation, salinity creep and heater failures from December to March. How we keep a reef stable through a Chicago winter.

Nov 15, 20257 min read

Reef aquarium scene with stony and soft coral colonies growing across rockwork under blue and white lighting

Coral Bleaching: How to Spot It Early and Stop It

A bleached coral has lost its symbiotic algae, not its life. Here are the four triggers behind coral bleaching in reef tanks and the steps that bring color back.

Nov 15, 20257 min read

Cleaner shrimp perched on reef rock in a saltwater aquarium, one of the calmest inverts on a reef stocking list

Peaceful Reef Stocking Lists That Actually Work

Compatibility is decided long before you buy anything. Here are three peaceful reef tank stocking lists by tank size, plus the order to add every fish and invert in.

Nov 15, 20257 min read

Coral colonies in a home reef aquarium under blue and white lighting, showing several different growth forms

LPS vs SPS Corals: Which Suits Your Tank?

Both groups build stony skeletons, and that is where the similarity ends. Here is how LPS vs SPS corals compare on stability, flow, light, feeding and the cost of a mistake.

Nov 15, 20257 min read

Brightly lit reef aquarium scene, the kind of compact display a nano reef stocking plan is planned around

Nano Reef Stocking Ideas for Tanks Under 20 Gallons

Nano reef stocking is arithmetic before it is a wish list. Here is the bioload math for small volumes, plus worked builds at 10, 15 and 20 gallons.

Nov 14, 20257 min read

Reef aquarium scene with corals and live rock, the surfaces a cleanup crew is bought and sized to keep clean

Reef Cleanup Crew Packages for Chicago-Area Tanks

How to size a reef cleanup crew by gallons, rock surface and algae type, what a good package should contain, and what to check before you buy locally.

Nov 14, 20257 min read

Chicago's Premier Custom Aquarium Company

From stunning reef systems to commercial-grade installations up to 2,000+ gallons. Marine Concepts Inc designs, builds, and maintains aquariums that transform any space into a living masterpiece.

GET A FREE QUOTE