Why Feeding Matters for LPS Corals
LPS corals, or Large Polyp Stony corals, are some of the most rewarding animals in a reef tank to feed directly. Their fleshy polyps, visible feeding response, and generally strong appetite make feeding feel interactive in a way that many SPS and soft corals do not. Species like acans, blastomussa, scolymia, trachyphyllia, lobophyllia, favia, micromussa, and many euphyllia can all benefit from a thoughtful feeding routine when overall water quality is stable.
Feeding is not just about faster growth. For many lps corals, the right schedule helps improve tissue fullness, coloration, recovery after shipping or fragging, and resilience during stressful changes. While photosynthesis provides a large share of their energy through zooxanthellae, many LPS also capture meaty foods and dissolved organics in the wild. In captivity, targeted feeding can bridge the gap between survival and thriving.
At the same time, overfeeding is one of the easiest ways to push nutrients too high, irritate coral tissue, and destabilize a tank. The goal is not to dump food into the system, but to match food size, timing, and quantity to each coral's feeding behavior. Tracking those responses over time in My Reef Log can make it much easier to spot which corals benefit from frequent feeding and which ones do better with a lighter approach.
Feeding Schedule for LPS Corals Tanks
The best feeding schedule for lps corals depends on species, tank nutrient levels, fish load, and coral size. In most mixed reefs, a good starting point is 2 to 3 targeted feedings per week. That frequency is enough to support growth and tissue health without creating excess waste in tanks with moderate nutrient export.
Recommended frequency by coral type
- Micromussa, acans, blastomussa, favia, lobophyllia: 2 to 3 times per week
- Trachyphyllia, scolymia, cynarina: 1 to 2 times per week, larger portions but less often
- Euphyllia: 1 to 2 times per week, light target feeding only
- Chalice-type LPS: 1 to 2 times per week, small particle foods are usually best
Best time of day to feed
Many lps-corals extend feeding tentacles more readily 30 to 90 minutes after lights dim or during the evening photoperiod. If your corals are trained to daytime feeding, they may still respond well when pumps are reduced and food is introduced gently. Night feeding often produces the strongest response in brains, acans, and fleshy solitary corals.
How much food to use
Feed only what the coral can capture and ingest within a few minutes. For most LPS, one to three appropriately sized pieces per polyp or mouth is plenty. Overloading a coral with too much food can trigger mucus production, regurgitation, or bacterial irritation. If nitrate is already above 15 to 20 ppm or phosphate is above 0.10 to 0.15 ppm, reduce feeding volume before increasing nutrient export.
Stable chemistry matters just as much as food. Keep alkalinity around 8 to 9.5 dKH, calcium 400 to 450 ppm, magnesium 1250 to 1400 ppm, and salinity near 1.025 to 1.026 SG. If salinity drifts, feeding response often drops, so it helps to review basics like Salinity Levels for LPS Corals | Myreeflog alongside your feeding plan.
Special Considerations for Feeding LPS Corals
LPS corals are not all fed the same way, even though they are grouped together. Polyp size, skeleton shape, flow tolerance, and aggression level all change how a coral should be fed.
Food size matters
Small-polyp LPS such as some favia and chalice corals usually prefer fine particulate foods, enriched brine shrimp, mysis fragments, rotifers, reef roids-style powders, or finely chopped seafood. Larger fleshy corals like scolymia, trachyphyllia, and lobophyllia can take larger meaty items, but they still do best with bites sized to the mouth. If food is too large, the coral may partially swallow it and then spit it out 15 to 60 minutes later.
Flow should be reduced, not eliminated for too long
Turn off or slow return and circulation pumps for 10 to 20 minutes during target feeding. This gives the coral time to grab food without it blowing away. Avoid leaving the tank stagnant much longer than necessary, especially in heavily stocked reefs where oxygen demand remains high.
Nutrients must stay balanced
Heavier feeding can be very effective, but only if the tank can process it. Aim for nitrate around 5 to 15 ppm and phosphate around 0.03 to 0.10 ppm for many LPS-dominant systems. Ultra-low nutrient systems often produce pale tissue and weak feeding response, while very high nutrients can lead to browned-out corals and algae pressure. Water quality basics such as Ammonia Levels for LPS Corals | Myreeflog and Nitrite Levels for LPS Corals | Myreeflog should remain non-negotiable, both ideally at 0 ppm in established reef tanks.
Different corals show different hunger signals
Experienced keepers often wait for subtle clues before feeding. Puffy tissue, visible feeder tentacles, a sticky mucus net, and an active mouth response are all signs a coral is ready. Some LPS can also be conditioned by adding a small amount of broadcast food first, then target feeding 5 to 10 minutes later once feeding tentacles emerge.
Step-by-Step Feeding Guide for LPS Corals
1. Choose the right food
Start with reef-safe foods that match the coral's mouth size. Good options include mysis shrimp, enriched brine shrimp, copepods, calanus, finely minced shrimp, clam, krill, and quality powdered coral foods. Avoid oily grocery seafood blends with preservatives or seasonings.
2. Prepare a small feeding mix
Thaw frozen food in a cup of tank water, then strain if needed to reduce excess packing juices. For powdered foods, mix a small amount with tank water until it forms a light suspension. The goal is concentrated nutrition, not a cloudy nutrient bomb.
3. Reduce flow
Pause wave pumps or switch them to a low mode. Leave enough gentle movement that coral tissue is not sitting motionless for too long.
4. Trigger a feeding response
Broadcast a tiny amount of fine food into the water first. Wait 5 to 10 minutes. Many lps corals will begin extending feeder tentacles or inflating feeding tissue once they detect food in the water column.
5. Target feed carefully
Use a pipette, turkey baster, or coral feeder to place food gently over the mouth or center of the polyp. Do not blast the coral. For acans and micromussa, place a small piece on each open mouth. For trachyphyllia and scolymia, one modest portion per mouth area is usually enough. For euphyllia, a light cloud of fine food near the tentacles is often safer than dropping large chunks directly onto the tissue.
6. Observe for ingestion
Watch for the coral to close around the food, move it inward, and keep it. If fish or shrimp steal food, use a feeding dome or cut bottle top as a temporary cover. If the coral repeatedly rejects food, try smaller portions, smaller particle size, or a later feeding time.
7. Restore flow after 10 to 20 minutes
Once most food is secured, restart normal circulation. This helps prevent waste accumulation and keeps oxygen levels stable.
8. Log the result
Record what you fed, how much, and how each coral responded. In My Reef Log, that kind of pattern tracking becomes especially useful when comparing growth, polyp extension, and nutrient trends over several weeks.
What to Watch For After Feeding
Signs your LPS corals are responding well
- Strong feeder tentacle extension before or during feeding
- Food is captured quickly and retained
- Tissue looks inflated and full over the next 24 to 48 hours
- Steady encrusting or skeletal growth at the edges
- Improved coloration, especially in acans and fleshy brains
- Better recovery after fragging or shipping stress
Signs the feeding routine is not working
- Food is repeatedly dropped or regurgitated
- Mouths remain gaping for long periods
- Tissue recession along the skeleton
- Brown jelly-like material or sudden tissue breakdown
- Excess algae or cyanobacteria appearing after heavier feeding
- Nitrate and phosphate climbing week after week
If a coral looks irritated after feeding, check both food size and flow. Also review light intensity. Some fleshy lps-corals under very high PAR, such as sustained levels above 150 to 200 PAR for lower-light species, may stay retracted and feed poorly. For many common LPS, a range around 50 to 150 PAR works well, though species vary.
Common Feeding Mistakes in LPS Coral Tanks
Feeding too much, too often
More food does not always mean more growth. Many corals thrive on consistency rather than excess. If your tank already has a heavy fish population and frequent fish feeding, your LPS may need less direct feeding than you think.
Using food that is too large
Large chunks can tear tissue, attract pests, or lead to regurgitation. Match the bite to the mouth. When in doubt, go smaller.
Ignoring nutrient export
If you increase feeding, you may also need stronger skimming, more frequent filter sock changes, a refugium adjustment, or occasional water changes. Feeding and export should rise together.
Feeding stressed or newly added corals immediately
A newly imported coral may need a few days to settle, inflate, and stop producing excess mucus before it feeds reliably. Focus on stability first, then begin with very light offerings.
Letting tankmates steal food
Cleaner shrimp, peppermint shrimp, hermits, and some fish can harass LPS during feeding. Distract fish on the opposite side of the tank or cover valuable corals during ingestion.
Not tracking what actually works
It is easy to assume a coral likes a food because it grabs it, but the better question is whether it keeps the food and improves over time. Logging feedings, nutrient readings, and coral response in My Reef Log can reveal whether a coral truly benefits from mysis, powdered foods, or less frequent meals. If you are also growing and dividing colonies, pairing that data with ideas from Top Coral Fragging Ideas for Beginner Reefers can help you judge when a well-fed colony is healthy enough to frag.
Building a Sustainable LPS Feeding Routine
The most successful feeding strategy for lps corals is one that fits your tank's biology and your schedule. Start simple - feed 2 times per week, use modest portions, watch the coral closely, and adjust based on results. Corals that show clear feeder tentacles, strong tissue inflation, and gradual growth are telling you the routine is working.
Remember that feeding is only one part of the coral task. Stable salinity, clean water, appropriate PAR, and low stress matter just as much. When you combine those basics with measured target feeding and good record keeping in My Reef Log, LPS corals often reward you with dramatic extension, richer color, and noticeable growth over time.
Frequently Asked Questions
How often should I feed LPS corals?
For most lps corals, target feeding 2 to 3 times per week is a strong starting point. Larger solitary corals like scolymia and trachyphyllia often do well with 1 to 2 feedings per week. Adjust based on nutrient levels, feeding response, and overall coral health.
What is the best food for LPS corals?
The best foods are usually small meaty items and fine particulate coral foods. Mysis shrimp, calanus, enriched brine, copepods, finely chopped seafood, and quality powdered blends all work well. Choose food based on mouth size and avoid oversized chunks.
Should I feed LPS corals during the day or at night?
Many LPS feed best in the evening or after lights begin to dim because feeder tentacles are more likely to extend. That said, corals can be conditioned to daytime feeding if you are consistent and use a small amount of food to trigger a response first.
Why are my LPS corals spitting out food?
Common reasons include food that is too large, feeding too much at once, poor water quality, excessive flow during feeding, or a coral that is stressed and not ready to eat. Try smaller portions, gentler target feeding, and confirm that ammonia and nitrite are 0 ppm, nitrate is reasonable, and salinity is stable.