10/09/2026
💡 How much light do your corals REALLY need?
If you've been reefing for a while, you've probably heard numbers like:
🪸 Soft Corals: 50–150 PAR
🌺 LPS Corals: 75–200 PAR
🌈 SPS Corals: 200–350+ PAR
But what does PAR actually mean — and should you really be chasing a specific number?
PAR measures the amount of photosynthetically active light reaching a particular point in your aquarium.
And here's the important part:
More PAR does NOT automatically mean healthier corals.
Too little light can result in poor growth, browning and dull coloration. Too much can cause light stress, pale tissue and even bleaching.
The trick is giving each coral the right amount of light — and allowing it time to acclimate.
Your reef also doesn't have just ONE PAR reading.
Light intensity changes depending on water depth, rockwork, shadows, mounting height, fixture position and where the coral actually sits in the aquarium.
That's why mapping your tank can be so useful.
In our latest guide, we break down:
💡 What PAR actually measures
🪸 Typical PAR ranges for Softies, LPS & SPS
📏 How to measure PAR around your reef
🌈 PAR vs spectrum and PUR
⏰ Photoperiod and Daily Light Integral
☀️ Signs of too much or too little light
📈 How to acclimate corals safely
🪨 How to create different lighting zones
🔦 Choosing lighting for a new reef tank
👉 Read the full guide:
https://there**er.club/par-explained-for-beginners-how-much-light-do-your-corals-really-need/
Setting up a new reef? The Re**er carries reef lighting and the other equipment you'll need to build your system — including tanks, filtration, protein skimmers, return pumps, wavemakers, salt mix, RO/DI equipment, test kits and more.
And remember:
A PAR meter tells you how much light is there.
Your coral tells you whether you got it right. 🪸
📍 The Re**er
600 Geylang Rd, Singapore 389539
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🌐 https://there**er.club
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