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The ICL-300 is a 4-foot, full-spectrum inner-canopy bar with diodes on three sides that emit light across roughly 300 degrees. It carries its own built-in 120W driver, so it runs as a self-contained unit — it lies flat within the canopy on the TSD-1 stand to light the lower and mid bud sites that overhead fixtures cannot reach. Use it inside a ThinkGrow Model One setup or as a standalone inner-canopy light under any overhead fixture.
Unlike the overhead TLB bars, the ICL-300 needs no separate driver. Its Samsung white-based full-spectrum diodes deliver above 314 µmol/s PPF at 120W with an L90 rating beyond 54,000 hours across four independently controllable channels — full spectrum white, deep red, far red, and UV. For growers already running TrolMaster, the ICL-300 integrates natively via the LMA-G adapter, letting a single controller manage dimming, spectrum, and daily light integral for your entire room.
For larger footprints, multiple units daisy-chain to one another via a TDC cord and share a single power cord, keeping installation clean and scalable. It is IP56 rated for humid grow environments and mounts at canopy height on the TSD-1 stand, sold separately.
The ICL-300 carries its own built-in 120W driver, so unlike the overhead TLB bars it does not need a separate driver. You add it to light the lower and mid bud sites that overhead light misses.
These are starting points. Use the higher end for dense or heavily trellised canopies, and pair the ICL-300 with overhead bars for full top-to-bottom coverage.
Diodes on three sides push full-spectrum light across roughly 300 degrees, reaching lower bud sites overhead bars miss.
White-based full-spectrum Samsung diodes deliver above 314 µmol/s PPF at 120W with an L90 rating beyond 54,000 hours.
Runs self-contained on its own 120W driver and daisy-chains to other ICL-300 units without a separate TLD driver.
Pair with a TrolMaster controller and LMA-G adapter for automated dimming, spectrum, and daily light integral across the room.
The TSD-1 stand and daisy-chain cords (TDC-2, TDC-3, or TDC-4) are ordered separately.
| Specification | Value |
|---|---|
| Input Power | 120W (built-in driver) |
| PPF | Up to 360 µmol/s |
| Efficacy | Up to 3.0 µmol/J |
| Spectrum | 4 channels (full spectrum, deep red, far red, UV) — 300-degree output |
| Input Voltage | 100-277 VAC, 50/60 Hz |
| Dimming | 0-100% via built-in driver (RS485 / 0-10V) |
| Dimensions | 45.98″ (L) × 3.32″ (W) × 2.59″ (H) |
| IP Rating | IP56 |
| Lifetime | L90: >54,000 hours |
| Mounting | Within the canopy on the TSD-1 stand |
The ICL-300 carries the same four-channel Samsung full spectrum as the overhead Model One bars — full spectrum white, deep red (660nm), far red (730nm), and UV-A (385-400nm) — delivered from inside the canopy across a 300-degree angle. All four channels run on the built-in 120W driver and daisy-chain with overhead bars; a TrolMaster controller can automate the blend across the room.
ICL-300 spectral output across three efficacy-optimized recipes (up to 3.0 µmol/J), emitted at a 300-degree angle from inside the canopy.
| Spectrum channel | What it does |
|---|---|
| Full spectrum (white) | Samsung white-based base for photosynthesis across veg and flower |
| Deep red (660nm) | Peak photosynthetic efficiency, drives flowering response |
| Far red (730nm) | Shade-avoidance signal, can shorten flowering time |
| UV-A (385-400nm) | Triggers protective stress responses and pigments |
ThinkGrow backs the ICL-300 with a 5-year warranty. If a component fails, the support team diagnoses it by phone or email and ships replacement parts directly — no need to take down the fixture or wait weeks for an RMA. Trimleaf is an authorized ThinkGrow retailer; this unit ships with the full manufacturer warranty, valid for the original purchaser.
No. Unlike the TLB bars, the ICL-300 carries its own built-in 120W driver, so it runs self-contained. You only choose a power cord at checkout, or select No Cord if you already have one.
Yes. Each ICL-300 has its own built-in driver, and you daisy-chain units to one another with a TDC cord, then feed the group from a single power cord. Mount each on its own TSD-1 stand.
The TLB bars hang overhead and light the top of the canopy. The ICL-300 sits inside the canopy and throws light across three sides — roughly 300 degrees — to reach the lower and mid bud sites overhead light cannot. Run both together for full top-to-bottom coverage.
No. The ICL-300 runs on its built-in driver on its own. A TrolMaster controller is optional: it lets one interface dim and schedule the ICL-300 alongside the rest of your lights via the LMA-G adapter.
A common starting point is one to two ICL-300 bars per overhead tier in dense or trellised flower rooms. Use the higher end for heavily trellised canopies, and size to how much lower-canopy light your plants are missing.
Five years. ThinkGrow ships replacement parts directly after a phone or email diagnosis rather than requiring a full-fixture return, keeping your room running during any repair.
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
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