Yes, they always run out when you cannot get more or when you are away. That is Murphy's Law.
I am quite pleased with the process though, the ADA light bar for the 38 Gallon tank would have cost 180$+ shipping or tax. So this cost about 20X less and looks about as good.
The lights also where much better priced than the ADA solar series, 800$ for a single 150W + 2x 32 W PC lights, I got a better design and more PC lighting for 350$ for the same size configuration.
The single 150HQI on the small tank is only 135$ with lamp included, so it was a mere 220$ for everything seen, the stand which was DIY, the Light and the stand to hold the light.
The 150W HQI ADA light was about 500$ and 180$ for the light holder, 900$ for the stand. So almost 10X less cost.
I still get the same results since I use the ADA aqua soil.
I have liked the ADA As a lot, I did several test both with and without power sand and found no difference in growth rates over almost 2 years on 4 replicates. More than enough to suggest that there is no difference due to chance alone. Since, I've used nothing but the ADA As alone, which is much less messy.
Tobi mentioned that many do not like to add fertilizer to their tanks, but whether it's in the sediment or the water column, makes little difference to algae, fish and toxicity etc.
So you are adding it, actually a lot, but as sediment, and simply because you cannot measure it with the test methods you use, does not imply the water is better for fish or not.
NH4 is a lot worse than NO3 in terms of low level toxicity.
Generally, I do about 3/4 EI on such tanks from most macro nutrients and a bit higher than EI for traces, this allows for less draw from the soil(It last longer) and less demand from the water column,. so together, you more "wiggle room" or flexibilty and ultimately better long term growth, than if you used just one method, water column or sediment based fertilization.
Use both to your advantage, that is the wiser choice, not just one.
Here's another shot of the 60 gal cube(60cm) that will be mainly for Congo tetras.
I like the 2ft long PC lights because I can get more types of colors for that length, namely the GE 9235K bulbs.
The longer 3 ft 96W PC bulbs are 6700, but I have 8000K ADA bulbs for everything else.
So I'll get good color rendition and nice effects on the fish color as well as a nice light spread, these hoods are only 7cm high! And they are 15 inches, or about 38cm between the front and rear Powercompact lights, over a 60 cm distance, which means excellent spread and angles for the plants.