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Thank you! If you're just looking to get something set-up and running you can buy both the anode and cathode as a set from http://store.theamateurchemist.com/mmo-mesh-anode-titanium-mesh-cathode-2-by-6/ for $25. Then attach that to an old laptop power supply (>18V) and you'll be in business. I...

If you are certain that there are no leaks in your system then the likely cause is siphoning. If there was still water in your lines when the pump was turned off then the drainage of those lines could be enough to siphon the water out of your reservoir. This would continue until the level of...

No bites? @MadNyeTheHydroGuy I saw that you were interested in experimenting with this. Let me know what you think!

Pretty much. It used to be that the high voltage drivers for series applications were more expensive and harder to obtain, that really isn't the case anymore. Series drivers are a little more flexible with using unmatched LEDs (as long as you aren't exceeding the maximal safe forward current of...

Those HLG-***H-48A drivers still have constant current as well as constant voltage adjustment through the internal pot. They can be dimmed just like the HLG-***H-C****. In my experience, the danger of thermal runaway is overstated. I've built numerous lights that utilized parallel LED strings...

I experimented with various voltages and currents today. I made some crude spacers by wrapping electrical tape between the anode and cathode to get a gap of about 1.5mm. Sorry for the crotch shot... I then hooked the MMO coated titanium anode to the positive of my bench top DC power supply...

I'm assuming you mean CXB 3590? One at 1400 mA or two at 700 mA in parallel.

I got curious about the use of electrolytic oxygen generators from this thread discussing the O2 Grow dissolved oxygen emitters. However, there is little to no unbiased (non-shill) reviews about the product available...

Shameless plug. If you're interested on modeling your light you can check out my thread here... https://www.rollitup.org/t/photosynthetic-spectral-quality-calculator-psqc.922782/ It will give you an estimate of PPF per cob and then you can multiply that by number of cobs and divide by your m^2...

No problem, if you give me a sketch with dimensions I'll cad it for you. Before I print it I'll send you the models to confirm that they are correct.

I have access to a 3D printer. If you have a model I can print it, or I can help you cad it up.

https://en.wikipedia.org/wiki/Thermal_design_power You can make comparisons between a heat sink's TDP rating and CPU wattage, you merely have to account for the variables. For a CPU, wattage draw by the processor is equal to the heat dissipation of the processor (for engineering purposes). If a...

The Zalman's will come close. I've actually used that exact cooler to cool some old Pentium 4's running at ~100W. However, acceptable temperatures were ~70C for the processor, you would want to avoid going that high full-time on LED's. I would say most of those server heat sinks that you have...

When CPU manufacturers release their chip specifications they include a metric called "thermal design power" (TDP). https://en.wikipedia.org/wiki/Thermal_design_power TDP is the maximum amount of heat given off by the CPU (under real world usage). Although TDP is not exactly equal to the power...

Update 10/7/2016 Download Version 1.1: https://drive.google.com/open?id=0B1eQNepXLsV0UDF2SDFlQ2UzZ2M Added more functionality, including efficiency, PAR, and PPFD estimations Fixed an error with the integrals not being solved over the correct ranges

Quick note: I'm sure that the average RIU member will have little use for this, but I know there are other nerds out there who love modeling/designing/building as much as they love growing!

I've been a lurker on RIU for a few months, soaking up as much information as I can. During this time frame I've built multiple grow concepts, re-built them, and now have one completed harvest under my belt. I'd like to thank the members of the forum for their contributions to my success...

If a tree falls in the forest, and no one is around to hear, do the other trees make fun of it?