High End LEDs vs T5 Fluorescent! Thrive Agritech: Infinity Linear (Review & Lettuce Test)

Hi Youtubers, I'm Al Gracian from AlboPepper.


Today we're looking at an independent test.



of an LED grow light from the Thrive Agritech line up.

Thrive Agritech may be a newer name but itwas formerly known as Transcend.

Last year we looked at the Transcend T5 replacementbulbs.

These LEDs replace the individual bulbs withinan existing 4 foot T5 light fixture.

What if you don't already own a system ofT5s? Well, today we'll look at the Infinity LinearLED – a self-contained LED system that is ready to use out of the box.

This system has a higher efficiency ratingthan the T5 LED tubes.

And it brings a lot more to the table in bothfeatures and flexibility.

Thrive Agritech was generous enough to sendme two of these bad boys.

A single Infinity Linear is able to replaceTWO high output, 4 foot T5 bulbs.

That's the claim at least.

So I'll run them head to head against my T5sto see if they live up to the hype.

Let's look at a few things that are specificto the Infinity Linear.

It's super light weight.

The lens cover is shatterproof.

In fact this entire fixture is designed tobe waterproof.

That makes it perfect for vertical farms whereyou may have multiple levels of nutrient solution.

This offers two mounting options.

We have brackets that can be surface mountedand then clicked onto the light.

And also wires for hanging.

With two lights, I can demonstrate the daisychain feature.

But even more impressive is the end-to-endconfiguration where these can be connected together for a continuous, linear light source.

Let's look at how I'm configuring these.

I'm trying to structure a fair test againstsome T5s.

So ideally, the LEDs will be placed side-by-side.

I expect 2 Infinities to keep up with a 4bulb T5 system.

So I've created a super basic mounting optionthat does the trick.

But how far should these be placed from theplants? Well I spent a whole weekend with my ApogeeSQ-500 sensor, taking PPFD measurements.

The T5s seemed brighter.



Was this a realistic comparison after all? At a distance of 6 inches the T5s were pushing480 PPFD (too intense for my lettuce).

But at a distance of NINE inches, the readingsdropped to 333 PPFD.

That extra space is good too, because of allthe heat this throws.

The Infinity Linears were only outputting263 PPFD.

But once I placed them at 6.

75" centers, thatwent up to 283.

It still seems a little unfair, but we'llgive it a shot & see what we get! These were grown in the Summer in a garagethat's NOT climate controlled.

Not by design, but simply how things workedout.

We have 4 hydroponic lettuces on each side.

Identical nutrients in all trays.

Half mixed from rain water and the othersfrom tap water.

Here are the details for the testbed.

The lettuce seedlings were thinned for matchingvigor, after a week of germination.

And then the test was underway! After week 1.



all plants looked fine.

At week 2 we had even better growth.

The LEDs produced longer leaves.

Would these plants become thin and spindly? Well after completing week 3, the InfinityLinears looked quite promising.

At day 22 one of the trays under the T5 feltvery light.

Our solution was running low.

Time to conclude the test.

The LED plants appear bigger.

But the T5s have a deeper color.

The pigments are more concentrated, perhapsdue to light levels, heat response or even spectral composition.

On both sides, there were slight signs oftip burn, but it was not severe and most leaves looked healthy.

Roots looked healthy in all samples, but theLEDs produced a more extensive root system.

Time to weigh these and measure the remainingsolution.

And here's a fancy chart to show all recordeddata.

Plant weights – even info about our nutrientsolution.

Now, for the fun part, where we get to make.



graphs! First up, look at how much extra growth wegot under the Infinity Linear LEDs.

The T5s produced an average plant size of95 grams but look at the boost under those LEDs – 129 grams! Next, look at the contrast in water consumption.

A significant increase under fluorescents.

But the plants weren't using the water forgrowth.

Instead this must have been caused by increasedheat levels.

You could look at the growth versus waterconsumption side-by-side.

See that direct correlation under the LEDs? Larger plants, more water use.

Under the LEDs, these plants appear to beusing just what they need for tissue production and growth.

To get a rough idea of just how much wateris required to produce the plant mass, this graph overlay is more to scale.

So let's sum up our key data points.

The Infinity Linear LEDs were able to boostlettuce growth by 36%.

But those plants used 36% LESS water.

All the while, in my testbed, the LEDs consumed36% LESS power! Speaking of power consumption, how much didit cost to run this test? This shows the total cost for each light.

Going further, we can compare how much growthwas extracted per light.

Looking at the cost difference per gram orounce.

When it's all said and done, switching tothese LEDs gave me twice the harvest per dollar spent on electricity! Keep in mind though that this test was designedto compare two Infinities to four T5s.

In reality though, these LEDs are not justsome T5 replacements.

They bring MUCH more to the table.

That includes some amazing flexibility inthe way they can be configured.

Is it possible to extract even MORE growthper watts consumed? I suspect so.

And that's what I'm testing next.

Already though, I'm quite happy with whatI've seen.

Thrive Agritech has done a great job in theirproduction of these Infinity Linears.

Something to note, the models I tested boastan efficiency of 2 micromoles per joule.

But this has been upgraded to 2.

2 micromoles.

Improvements are always coming along.

But who should buy one of these models? Certainly these lights are perfect for: seedstarting, lettuce, microgreens, plant cloning.

These are great for home gardeners.

But especially for Growth Chambers, TissueCulture Labs, Greenhouses and VERTICAL FARMS.

The waterproof construction is ideal for Hydroponic, Aeroponic or even Aquaponic installations.

Pop over to Thrive Agritech's site for thelatest specs.

Plus there's plenty of documentation explainingall of your configuration options.

If this LED seems like something that willsuit your needs, I certainly can recommend it.

I really appreciate Thrive Agritech, for takingthe time to contact me and sending these lights.

And I really appreciate your support on mychannel.

Please subscribe if you haven’t already.

And as always, Happy Gardening!.

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