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Im sorry I'm a total noob. I have no idea what I'm trying to gain from kelp. I only want to grow organic and read here that everyone is using kelp for amazing results. The high potassium is easy to replace I guess so that whats left are the micro nutrients. I looked green sand up and rock dust...

Well the sea is poluted as fuck with plastic particles and mercury. And seaweed mops heavy metals up. Im sorry I dont have a source where they tested kelp for heavy metals. Only some general stuff about polution. But if you google it up I'm pretty sure you will find information about it...

Hi, I'm interested in this organic stuff since I want to reuse my earth instead of throwing it away. I really dont want to use kelp meal because of the high amounts of heavy metals found in it. Are you guys still using it or did you find any alternative that is as good as kelp

would be very interesting to know how hot your strips get.

Sry I meant what does it need to keep the f-series cool at max current. So 1.1 or 1.2 A. Did anyone in this Forum ever measured the temperature of the f-strips with different current like in the bridgelux EB thermal thread?

What does it need to keep a 4ft samsung f-series strip cool?

just a typo. I'll have a look there once I find it.

did anyone ever compare a COB grow vs strips grow?

I'm loving the beef :D btw. I've read that most meanwell HLG driver exceed their max current output by 10-20%. Is this true? Can it still do this when voltage output is at 100%? So a 200W driver would have 210-220W ?

wow ok, well thats a number. why is anyone even buying the EB strips? its pretty much as expenisve as the samsung...... or will the extra distribution be the nice benefit? ok well you dont need a heatsink with the EB strip

So I've calculated through some options: first of all: is there some kind of table where I can see how efficient the bridgelux strips are depending on how hard I run them? Because that would make decision a lot easier. now the options: Option 1 400 Watt: 19 2ft long bridgelux strips powered...

If I use something like this driver to fire up 16 2ft stripes: HLG-240H-20 I have to dimm to run it @200 watt. Is the efficiency of the driver still arround 93% when it is dimmed?

well sounds nice. no heatsink fpr the EB strips you say? are u sure about that? any links where someone tested this here? and i need 18 EB to get the same light like from 10 f-series? why does 18 EB have 4200 diods? one strip with 1120mm lenght got 112 diods? so 18 strips would have 2016 or am...

So when I use 1 samsung strip FB22B with 144 diodes and run it at 30,55 watt, is this the 30w/sqft you are referring to? because that means its 12.38 watt are wasted in heat and 18.17w are the light. or do u mean 30w without heatwasting? that would be arround 54,71w for one strip. again 30watt...

hmm.. Am I calculating this wrong? From 400W to 500 W its about 25% more electricity. So if it doesnt get me more than 25% yield its not really worth it. If it only gets me 15% more yield its totally not worth it. Don't know if my math checks out :D

mh.. ok. where can I see a reference of how much PAR different setups would give me? like I said electricity is very expensive here... if i only get like 10-20% more tomatoes in the end its not really worth it :/

this is so strange... i never can find the right driver for my setups... i was thinking of splitting this panel in 2 (so i have a better height adjustement.) I will take the 560mm stripes, because the 1120mm are not available...

I appreciate your informations. so what do you recommend for my setup? I decided to smaller the space a bit. so 3.3 x 4 ft = 13.2 sqft I was aiming for 400 watt on this space I remember growmau5 solved this issue for COB with 1 COB per sqft. Is there something along this with stripes as well?

what kind of heatsink do you guys recommend for the longest 1.12meter EB strips? I have found a vendor in poland that offers one alu-strips for about 2,5€ https://www.piekarz.pl/pl/?item=35120 any other options? edit. I want to run 15 of them @400 watt

well for the same money i can get about: 2x EB strips or 1x F strip (1.12m length) but i see your point