---
product_id: 362894474
title: "- CMH 315W 3000K 625umol / 4200K 590umol Ceramic Metal Halide 3000K CDM Full Spectrum Indoor Flowering Grow Light Bulb Pack of 2"
brand: "gruotvszak"
price: "$154.34"
currency: USD
in_stock: true
reviews_count: 8
url: https://www.desertcart.us/products/362894474-cmh-315w-3000k-625umol-4200k-590umol-ceramic-metal-halide-3000k
store_origin: US
region: United States of America
---

# 20,000 hours long lifespan 315W high power output Full spectrum with enhanced UVA & red light - CMH 315W 3000K 625umol / 4200K 590umol Ceramic Metal Halide 3000K CDM Full Spectrum Indoor Flowering Grow Light Bulb Pack of 2

**Brand:** gruotvszak
**Price:** $154.34
**Availability:** ✅ In Stock

## Summary

> 🌿 Illuminate your indoor garden with power and precision—grow like a pro, glow like a trendsetter!

## Quick Answers

- **What is this?** - CMH 315W 3000K 625umol / 4200K 590umol Ceramic Metal Halide 3000K CDM Full Spectrum Indoor Flowering Grow Light Bulb Pack of 2 by gruotvszak
- **How much does it cost?** $154.34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/362894474-cmh-315w-3000k-625umol-4200k-590umol-ceramic-metal-halide-3000k)

## Best For

- gruotvszak enthusiasts

## Why This Product

- Trusted gruotvszak brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power-Packed Growth Boost:** 315 watts delivering 625 μmol/s PAR for optimized photosynthesis and vigorous plant development.
- • **Smart Warm-Up & Cool-Down:** Efficient 5-minute warm-up and 7-minute cool-down cycles protect your investment and maximize performance.
- • **Spectrum That Speaks Plant:** Balanced full spectrum with UVA and rich red light to enhance flavor, antioxidants, and flavonoid production.
- • **Endurance That Outlasts Seasons:** Over 20,000 hours lifespan with 90% output retention at 10,000 hours—grow smarter, not harder.
- • **Built for Safety & Compatibility:** Durable double-jacketed PGZX18 base fits all fixtures, with bursting-proof design for peace of mind.

## Overview

The CMH 315W Ceramic Metal Halide grow light bulb pack offers a high PAR output of 625 μmol/s and a well-balanced full spectrum including UVA and red light, designed to enhance plant growth and flavor. Featuring a durable double-jacketed PGZX18 base compatible with most fixtures, it ensures safety and longevity with over 20,000 hours of life. Ideal for indoor flowering, this 315W bulb delivers 35,000 lumens at 3100K color temperature, making it a premium choice for professional and enthusiast growers seeking efficient, reliable, and spectrum-optimized lighting.

## Description

Full description not available

## Features

- HIGH PAR PPF:Output as 625μmol/s,designed for plant growth
- WELL-BALANCED FULL SPECTRUM:With suitable UVA output,Stimulate antioxidants and flavonoids produce,make your Plants grow more flavorful;More blue light than HPS;Great red light output per Watt
- SAFE and COMPATIBLE:Standard PGZX18 base with double jacketed bursting proof design,fits all suitable fixtures both high or low frequncy,Low Frequency is recommended
- LONG LIFE: Over 20,000 hours total life time, premium 90% output maintanence for 10000 hours efficient grow,quality guaranteed
- WARM UP and COOL DOWN: 5 mins warm up time to achieve working tempreture, stands at least 7 mins to cool down after use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | GRUOTVSZAK |
| Light Type | Metal Halide |
| Special Feature | Full Spectrum |
| Wattage | 315 watts |
| Incandescent Equivalent Wattage | 2500 Watts |
| Light Color | white |
| Voltage | 100 Volts |
| Unit Count | 2.0 Count |
| Color Temperature | 3100 Kelvin |
| Number of Items | 2 |
| Brightness | 35000 Lumen |
| Shape | Tubular(T) |
| Material | Glass |
| Indoor/Outdoor Usage | Indoor |
| Power Source | Corded Electric |
| Color Rendering Index | 80 |
| Power Consumption | 315 Watts |
| Item Package Quantity | 1 |
| Light Source Type | Metal-halide Lamp |
| Light Source Wattage | 315 Watts |
| Accepted voltage frequency | 100 to 240 Volts and 50 Hertz to 60 Hertz |
| Control Method | App |
| Average Life | 20000 Hours |
| White Brightness | 35000 Lumens |
| Efficiency | 108.57 lumen/watt |
| Style | 3000K Large Box With 2 Bulbs |
| Global Trade Identification Number | 06974568040027 |
| Manufacturer | GRUOTVSZAK |
| Color | Transparent |
| Light Output Maximum | 35000 Lumens |
| Part Number | CMH315W3K-2 |
| Item Weight | 1.41 pounds |
| Package Dimensions | 9.57 x 5.91 x 2.36 inches |
| Item model number | CMH315W3K-2 |
| Finish types | Metallic |
| Included Components | Bulb included |
| Maximum Compatible Wattage | 315 Watts |
| Special Features | Full Spectrum |
| Batteries Included? | No |
| Batteries Required? | No |
| Wattage | 315 Watts |
| Bulb Diameter | 39 Millimeters |
| Bulb Length | 193 Millimeters |

## Product Details

- **Brand:** GRUOTVSZAK
- **Light Type:** Metal Halide
- **Special Feature:** Full Spectrum
- **Wattage:** 315 watts
- **Incandescent Equivalent Wattage:** 2500 Watts

## Images

![- CMH 315W 3000K 625umol / 4200K 590umol Ceramic Metal Halide 3000K CDM Full Spectrum Indoor Flowering Grow Light Bulb Pack of 2 - Image 1](https://m.media-amazon.com/images/I/71sZXab51gL.jpg)
![- CMH 315W 3000K 625umol / 4200K 590umol Ceramic Metal Halide 3000K CDM Full Spectrum Indoor Flowering Grow Light Bulb Pack of 2 - Image 2](https://m.media-amazon.com/images/I/816HnTl4sqL.jpg)
![- CMH 315W 3000K 625umol / 4200K 590umol Ceramic Metal Halide 3000K CDM Full Spectrum Indoor Flowering Grow Light Bulb Pack of 2 - Image 3](https://m.media-amazon.com/images/I/71gzBnSSjLL.jpg)
![- CMH 315W 3000K 625umol / 4200K 590umol Ceramic Metal Halide 3000K CDM Full Spectrum Indoor Flowering Grow Light Bulb Pack of 2 - Image 4](https://m.media-amazon.com/images/I/61W7PxPMbjL.jpg)
![- CMH 315W 3000K 625umol / 4200K 590umol Ceramic Metal Halide 3000K CDM Full Spectrum Indoor Flowering Grow Light Bulb Pack of 2 - Image 5](https://m.media-amazon.com/images/I/71qI2xLOZVL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great, love it!
*by K***O on February 20, 2025*

Had trouble finding a replacement bulb and this one works great! Great brightness and good value for your money too considering the alternatives!

### ⭐⭐⭐⭐⭐ Good so far
*by E***C on June 15, 2024*

Reviews always have me feeling some type of way. They range from excellent to do not buy. Took a chance with these since 2 are the price of 1 name brand bulb. So far they work and haven't had any issues.Only problem I had is with driver dropping package off. These packages should be labeled as fragile. The driver dropped the packages onto the ground instead of setting them down nicely. I get they are in a hurry but I feel if packaging was labeled as fragile the delivery driver would of taken the extra precautions to gently set the package down.

### ⭐ One of two bulbs failed immediately
*by G***M on March 23, 2025*

We just got these bulbs in and installed, but one burned out within days of being used. Not sure how to do a return for just one. If the vendor can address this, I will change my rating.

## Frequently Bought Together

- GRUOTVSZAK CMH 315W 3000K 625umol / 4200K 590umol Ceramic Metal Halide 3000K CDM Full Spectrum Indoor Flowering Grow Light Bulb Pack of 2
- iPower 630W Double Lamp Ceramic Metal Halide CDM Hydroponic Grow Light System Kits, Aluminum Hood, 120~240V Ballast, NOT Include CMH Bulb

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-14*