ReefBreeders Meridian OHM Optics
Special order: Reef Effect orders this product from the supplier before shipping it to you. Estimated dispatch is 10–20 business days after ordering. Transit time is additional.
Shipping: $19 flat rate. Shipping is charged once per shipping group in your order: $19 for accessories and additives, $49 for lighting, and $69 for tanks and large equipment. If your order includes more than one group, the applicable charges are added together. Livestock and merchandise have separate shipping charges.
Match Meridians to your tank
OHM optics change the shape of the Meridian's beam, which varies how wide the light spreads and how deep it drives coral growth. Each optic is a single panel covering one full 24-LED matrix. Three spreads are available, and you can mix them within a single fixture.
The three optics
Every Meridian ships with OHM Balance optics as a default.
45°
OHM Focus
Tightest beam · up to 48 in / 120 cm depthConcentrates output into a smaller footprint and carries usable light further down. For deep tanks with corals on the sandbed, or lights mounted higher above the aquarium.
90°
OHM Balance
Standard · up to 36 in / 90 cm depthAn even, well blended spread that covers the majority of reef tanks.
110°
OHM Encompass
Widest beam · up to 24 in / 60 cm depthPushes light further front to back and softens shadowing between colonies. Suits wider or shallower tanks, and setups with lower light mounting height.
Optics for every reef. All three optics grow SPS. What changes is how far down the light reaches, so match the optics to your tank's depth and your lights mounting height.
How many your fixture takes
One optic covers one LED matrix, and each step up in fixture size adds another.
Coverage by fixture
Footprint is length by front-to-back.
Coverage by fixture
Footprint is length by front-to-back.
| FixtureModel | Focustanks up to 48 in | Balancetanks up to 36 in | Encompasstanks up to 24 in |
|---|---|---|---|
| Meridian 11 | 16 × 16 in40 × 40 cm | 24 × 24 in60 × 60 cm | 30 × 30 in75 × 75 cm |
| Meridian 24 | 24 × 24 in60 × 60 cm | 36 × 24 in90 × 60 cm | 36 × 30 in90 × 75 cm |
| Meridian 35 | 36 × 24 in90 × 60 cm | 48 × 24 in120 × 60 cm | 48 × 30 in120 × 75 cm |
| Meridian 45 | 48 × 24 in120 × 60 cm | 60 × 24 in150 × 60 cm | 60 × 30 in150 × 75 cm |
| Meridian 63 | 60 × 24 in150 × 60 cm | 72 × 24 in185 × 60 cm | 72 × 30 in185 × 75 cm |
| Max coral growth depthMax depth | 48 in120 cm | 36 in90 cm | 24 in60 cm |
Mix optics in one fixture
Because each optic covers its own matrix, you can run different spreads across a single light. On a Meridian 35 with a tall rock structure in the middle, Balance or Encompass over the center spreads light across the aquascape, while Focus on the two outer matrices reaches deeper into the sandbed.
Careful with OHM Focus over shallow areas. It concentrates output, so above raised rockwork it produces very high PAR. Dial back intensity and acclimate corals gradually.
Swapping them
Product details
Special order: Reef Effect orders this product from the supplier before shipping it to you. Estimated dispatch is 10–20 business days after ordering. Transit time is additional.
Shipping: $19 flat rate. Shipping is charged once per shipping group in your order: $19 for accessories and additives, $49 for lighting, and $69 for tanks and large equipment. If your order includes more than one group, the applicable charges are added together. Livestock and merchandise have separate shipping charges.
Match Meridians to your tank
OHM optics change the shape of the Meridian's beam, which varies how wide the light spreads and how deep it drives coral growth. Each optic is a single panel covering one full 24-LED matrix. Three spreads are available, and you can mix them within a single fixture.
The three optics
Every Meridian ships with OHM Balance optics as a default.
45°
OHM Focus
Tightest beam · up to 48 in / 120 cm depthConcentrates output into a smaller footprint and carries usable light further down. For deep tanks with corals on the sandbed, or lights mounted higher above the aquarium.
90°
OHM Balance
Standard · up to 36 in / 90 cm depthAn even, well blended spread that covers the majority of reef tanks.
110°
OHM Encompass
Widest beam · up to 24 in / 60 cm depthPushes light further front to back and softens shadowing between colonies. Suits wider or shallower tanks, and setups with lower light mounting height.
Optics for every reef. All three optics grow SPS. What changes is how far down the light reaches, so match the optics to your tank's depth and your lights mounting height.
How many your fixture takes
One optic covers one LED matrix, and each step up in fixture size adds another.
Coverage by fixture
Footprint is length by front-to-back.
Coverage by fixture
Footprint is length by front-to-back.
| FixtureModel | Focustanks up to 48 in | Balancetanks up to 36 in | Encompasstanks up to 24 in |
|---|---|---|---|
| Meridian 11 | 16 × 16 in40 × 40 cm | 24 × 24 in60 × 60 cm | 30 × 30 in75 × 75 cm |
| Meridian 24 | 24 × 24 in60 × 60 cm | 36 × 24 in90 × 60 cm | 36 × 30 in90 × 75 cm |
| Meridian 35 | 36 × 24 in90 × 60 cm | 48 × 24 in120 × 60 cm | 48 × 30 in120 × 75 cm |
| Meridian 45 | 48 × 24 in120 × 60 cm | 60 × 24 in150 × 60 cm | 60 × 30 in150 × 75 cm |
| Meridian 63 | 60 × 24 in150 × 60 cm | 72 × 24 in185 × 60 cm | 72 × 30 in185 × 75 cm |
| Max coral growth depthMax depth | 48 in120 cm | 36 in90 cm | 24 in60 cm |
Mix optics in one fixture
Because each optic covers its own matrix, you can run different spreads across a single light. On a Meridian 35 with a tall rock structure in the middle, Balance or Encompass over the center spreads light across the aquascape, while Focus on the two outer matrices reaches deeper into the sandbed.
Careful with OHM Focus over shallow areas. It concentrates output, so above raised rockwork it produces very high PAR. Dial back intensity and acclimate corals gradually.
Swapping them
Special-order shipping
Reef Effect orders this product from the supplier before shipping it to you. Estimated dispatch is 10–20 business days after ordering. Transit time is additional. Shipping charges add together when your order includes different shipping groups. Livestock and merchandise have separate shipping charges.
Questions before ordering?
Contact Reef Effect before ordering if you need help with compatibility, care requirements, sizing, or product availability.