Coral

Livestock Selection Guide for Local Pickup in Wheeling, IL

How to choose aquarium livestock that suits the tank you already have, judge health at the shop, and get fish, inverts and coral home to Chicagoland safely.

Aug 197 min read

Beginner reef aquarium lit over a rock aquascape with soft corals and a clownfish in a home living room

Reef Tank for Beginners: What to Do in What Order

A reef tank for beginners goes best in sequence: pick the system, build and test it dry, cycle it fully, add forgiving corals, then add fish slowly.

May 117 min read

Coral frags bagged and cushioned inside an insulated shipping box, packed and ready for overnight transit

How We Ship Live Coral Safely Across the U.S.

Shipping live coral is a race against water quality. Here is how a coral box is bagged, insulated and timed, and what the buyer should do on arrival.

May 87 min read

Close-up of green and purple coral colonies with polyps extended under blue reef aquarium lighting

Coral Health: Early Warning Signs Reef Keepers Miss

Corals signal trouble long before they bleach. Here is how to read polyp extension, tissue recession and color shift while the problem is still small.

May 37 min read

Colorful coral frags on ceramic plugs arranged in a shallow frag tank under blue and white reef lighting

How to Buy Live Coral Online Safely

Buying coral sight unseen is a process, not a gamble. How to vet a seller, read a WYSIWYG listing, understand live arrival terms and quarantine properly.

Apr 37 min read

Cleaner shrimp, turbo snails and a green emerald crab on live rock in a stocked reef aquarium

Reef-Safe Invertebrates: What Actually Works

Reef safe is a spectrum, not a label. Which snails, shrimp and crabs are genuinely safe with corals, which are safe under conditions, and which are not.

Mar 87 min read

Green Fungia plate coral photographed for sale, resting on sand under blue reef aquarium lighting

Types of Live Coral and Where Each One Belongs

Soft, LPS, SPS and non-photosynthetic corals want different things from a tank. Here are the main types of live coral, and where each group belongs on the rock.

Jan 66 min read

Mixed reef aquarium under blue-dominant LED lighting, with soft corals, LPS and SPS colonies showing fluorescent color

Reef Light Spectrum for Soft, LPS and SPS Corals

Kelvin describes how a light looks, not what a coral receives. Here is how reef light spectrum works, and how blue, violet and white balance changes color and growth in soft corals, LPS and SPS.

Dec 10, 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 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

Close-up of a live coral colony photographed by Marine Concepts, the kind of frag that gets dipped before it goes in

How to Dip and Inspect Corals Before They Go In

Every new frag brings something with it. Here is the coral dip and inspection routine we run before anything is allowed near an established display, step by step.

Nov 11, 20256 min read

Corals growing in a display aquarium, showing the open polyps and clean tissue a buyer should look for

Choosing Healthy Coral Frags: A Beginner's Checklist

A frag tells you most of what you need to know before you buy it. Here is what we look at on the rack: polyp extension, tissue at the base, the plug and pests.

Nov 11, 20256 min read

Wide view of a marine aquarium in need of attention, the kind of tank a service call is usually booked for

Five Signs Your Aquarium Needs a Professional

Algae that comes straight back, losses in a pattern, drifting parameters, new noises and a growing backlog are the five signs professional maintenance is overdue.

Sep 9, 20257 min read

Close-up of a coral colony with polyps extended under blue aquarium lighting, typical of a hardy starter piece

12 Beginner-Friendly Corals and Where to Place Them

Twelve beginner corals worth starting with, and the light, flow and rock position each one wants so you can place a frag once and leave it alone.

Aug 13, 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.

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