https://www.petsupermarket.gr/sand-ae-siliceous-0-5mm-8kg?sort=p.price&order=ASC AdoraBelle what do you think of this one? Would a completely black sand be better?
Sorry
@betta4ever! , I didn't get a tag for this so didn't know you'd asked me something! Sounds like you've found a better solution anyway, so yay! I couldn't hazard a guess about the linked substrate, I'm sorry, I don't speak the language and google didn't give me a translate option , so I wouldn't have been much help anyway! Glad you can use something you already have though, that saves some cash, and lord knows this hobby costs enough as it is!
In general terms though, I don't think a completely black, unnaturally dark substrate is better - we know that the blinding whites aren't good for fish, especially with the tank lights bouncing off an unnaturally bright substrate, and I think
@Byron has suggested other potential problems with a super dark black, dyed like substrate, since neither would be found in the wild and a looming darkness beneath them might stress fish out as well, since it wouldn't look the bottom of a river or lake, but looming open water where predators might lurk. So I went for Unipac Limpopo "black" sand, which is really more of a slate grey than a true black;
But by the time you've added plants, leaf litter, other decor etc, I shouldn't think a dark black sand would be that stressing either, if other items help visually break it up? Hazarding a guess here though since I don't know how much research has been done into substrate colours. The feel in the hobby has definitely swung more towards replicating natural colours and textures as much as possible overall though.
Love the thick, healthy planting you have going on! I'd imagine most fish would be delighted to call that home! It appeals to me a lot, I really like the "jungle gone wild" type planted tanks. Much as I can admire the work and dedication that has gone into beautifully scaped and trimmed CO2 tanks, for us low tech people, having a wild mass of slightly untamed planting really appeals to me!