PHILIPS 901573 Master Color CDM Lamp 315 Watt Elite MW, 4200K (Blue)

The bulb I have now has been on my desk for 10 months. Since I have only had one return (because of my error) in 7 years of becoming an Amazon Prime member, I did not check to make sure it worked before I purchased. As for me, I was OVERconfident that if amazon sent me a defective product, it would be fixed. So, just now, I plugged in a bulb to veg some baby marijuana plants, and it ignited and warmed the bulb to peak performance, only for it to begin to burn out this morning. The box had two broken glass pieces rattling about inside when I first got it, but once the lights turned on, I figured the pieces wouldn't affect my battery. It doesn't matter what happens, I am out of money, and I no longer have confidence in buying everything I need through Amazon! It's so easy to make it up and keep a prime member! If you want to keep it, simply replace it with another! I believe the moral of the story is to try whatever u buy right away or else Amazon will screw you over. Having a Visa amazon credit card that you've spent over $10k on is worth nothing if you are a prime member. As of April 19th 2020, the following requirements will be added Thus, they accepted the bulb back and I received a refund less the $10 stocking fee, but I had to call back after they got my returned bulb to remind them to refund the last $10 to my account. Anyway, I reordered another bulb because my plants are so fond of them when they're in Veg and as supplemental along with LEDs In the end, the bulb came, and it was shattered inside and out. I requested to send back that one and have a new one sent out as soon as I saw the return tracking number. Here's what you need to know! Getting my third 315 CMH bulb from them is a lot easier now as it comes in a larger box with all the bulb wrapped in air-filled bags to prevent it from breaking. There is nothing I can tell you other than it didn't work. It's not clear who is in charge of this account, but whoever he or she is isn't good at making sure product gets to customers intact! My heart breaks.

Colson Mathews

| Aug 11, 2020

My garden was completely wrecked when I switched from 400w MH to 315w CMH! There was a short internodal spacing and a bushy plant structure. All the plans were fine and dandy. After only one week of using a 315w CMH, all of the branches are stretched 4 times the distance between internodal spacing! I think the notion that a 315 CMH lamp can replace a 600w MH lamp is a complete scam. The plants speak for themselves, no matter what the numbers say! Since switching to using this 315 CMH lamp, I have noticed much more branch stretching than I have ever seen before in my life. I noticed that the new lamp greatly stimulates my plants like they are barely receiving any light, and just by switching to this lamp from a 4000K 400W MH, my plants have gotten smaller and weaker. Further, I notice that all the leaves at the bottom of my plants are turning yellow due to the By contrast, I have found my 400w MH lamp effective because there is no yellowing, the internodal spacing is much closer, and even the plants themselves look healthier, with thicker, bigger Considering that the plants reach for the light at 12" from the canopy, I have no idea how they came up with 16" from the.

Harley Cameron

| Jul 05, 2021

The mid-veg and flower stage of the plant is where I use it. The lamp is not as long lasting as it should be. Within the first few weeks, the spectrum has become noticeably brighter. We're gonna need to order another one.

Zoey Rhodes

| Jun 01, 2021

I'm really happy with the way it's working so far. With it, I've gone almost all the way through my first grow. My plan is to use it in the 2x4x6 foot grow tent in a cheap fixture (an estimated 3 weeks from now). It is too early to tell how well the experiment worked until we harvest and measure the result but, for now, the plants appear to be doing well. There is less light output from this lamp than with a 500watt fluorescent fixture and 8-watt bulbs The tubes I had previously been running were T5s.

Ariella Flynn

| Jun 02, 2021

NO SOLD IN THE USA (THE BOX SAYS THIS) There's no difference between spelling "COLOR" and spelling "COLOR" like in how Europeon is spelled. On the device is all this stuff written all over it, and "4200K light" does not appear. It is a knock off bulb or a bulb that is not sold in the US but is being sold here because it has been brought into the US illegally.

Halo Reyes

| Nov 04, 2020

430+ watts of T5 will be replaced by this (which I will. It is beautiful to look at the spectrum of light on this bulb. My plants exhibited immediate and impressive responses to this light fixture, which replaced 430+ watts of T5 lights (which I had been using for years). It is an expensive option, but compared with replacing 8 T5 bulbs with better results and long bulb life, it is not so bad. That has me seriously thinking about CMH as a flower supplier.

Tiffany Kane

| Dec 31, 2020

Lots of growth can be expected from the plants. The total power of this 200 W led grow light was replaced with a 50W x 4 COB led grow light (the listing stated it was 800W). Now we have a much better version! This fixture works great in a Hydro Crunch fixture. I'm very glad I purchased it. More likely to be bought in the future.

Kyree Blanchard

| Nov 18, 2020

After so much waiting for the product to arrive and the vial to arrive all broken, because the box did not indicate that it is a fragile product and the vial has nothing inside to dam up the movements during transportation and handling. It is a total indignation! Aside from the shipping cost, I will also need to pay for the return shipping, for which Amazon will not even compensate me half the cost.

Mabel Graves

| Feb 07, 2021