True statement. I do have about 3-4 inches of sand on top.
That should be enough in a 75 gal aquarium.
I'm just getting into aquatic plant's & started in a 30 gal long
6 months ago & they grew out of it so I got a 75 gal aquarium
but instead of putting them in laid out substrate, I did something
different. I saved a bunch of 2 liter soda bottles & cut the curve
tops off & put 3 layers of gravel in them 1st layer is lava rocks
2nd layer is river rock & 3rd layer is pea gravel & I have a
660gph pump at 1 end (no filter or fish) & it pushes all the
debris around to all the plants & I use easy green as well.
I have java fern, amazon swords, water Wisteria, & jungle Val
the jungle Val I have in a 3ft long flower pot so it can spread
out other plantlets, so far everything is growing like weeds
the java fern I have them stuck between the bottles 4-now
& its doing good as well till I am ready to change the tank.
My
plan is to let the plants grow a little more being they aren't
that big & have them produce more plant's & once
that starts
I'm going to take the
new started plant's plant them in the tank
& the OLDER 1's replant them in a 110 gal stock tank for guppies.
The 1 new plant's I start in the aquarium will be the 1's I sell from
the 1's in the stock tank will be my extra plant's to replace the 1's
I sell out so I never run out & always have extra's on hand.