Another one with BDBS. I have it in all but two aquariums. I use the med/coarse grit. There is high filter flow (10x the water column and higher in GPH) and I have no issues with it getting into the filter. I also use a pre filter sponge on all intakes.
I know nothing about Fluvial filters. But when there is whistling from the spray bars of my Marineland Emperors it is from the holes being partly clogged. I would also look to be sure that there are no air leaks in the system. Air bubbles being forced through the holes could do that. Is the...
Not at all, it is like lightning in the wild.
I acclimate new fish by popping the flash from across the room and then feeding. Over the next couple of days I get progressively closer. In a few days the fish associates the camera with food and swims with the others to the glass.
Where do you live? Blasting sand is available in any country that they sand blast in. There are different types. The type most of us use is crushed coal slag.
I grow a wide variety of plants.
Black diamond Blasting Sand. $8.00 for a 50 pound bag at Tractor Supply Co. I have it in several planted aquariums. I can post photos if you like. You will want med-coarse grit that will not get into the filtration system. Also a pre filter sponge is a good idea. I use 10x the water column in GPH.
What are you feeding it?
Plecs need to be fed their own food. Blanched veg, high quality algae wafers.
Properly cared for BN can live upwards of 20 years. I have one ABN that is 10 years old and another one that is 5 or 6 years old.
Stick with the one if you have not kept angels before. Things can get complex fast if you put angels together if they are not all young. And if you get a mated pair (females also pair up) the other fish may be in harms way.
I never keep more that two medium angels in a 55.
And I have to agree...
ahhh, the Godzilla plant. I have one. It is not growing the way I expected a plant with that name to grow. But it looks healthy enough.
I will keep an eye on it. I have had it a month. If there are any changes to it I will get back.