thoughts/questions on substrate

Oct 15, 2005
3
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Chicago
#1
hello,
I havent posted for yrs, but now that I have an opportunity to have a tank, I'll be posting LOTS of questions, so please bare with me!
Anyway,
I have 46 gallon, fully stocked, its been running for 5 months. I did not use any substrate for a few reasons which i'll briefly talk about. Instead, I have set up a pile with a combination of quite a few large rocks, driftwood, and plastic plants in a seemingly random, chaotic looking manner.this pile provides the optimal number of nooks/caves/territories, and the plants act as "privacy curtains", and also "road blocks", to help prevent the nippy cichlids from lunging at the smaller barbs I have in there. I am giving away the aggressives because I am remaking the tank into a planted tank. It has become habitual for me to start off a tank by just throwing in large decorations which are used just for shelter and surface area for bacteria, rather than starting with a substrate base. I always planned to add the substrate, but lately I have figured that a substrate free tank is actually cleaner and easier to maintain than w/ substrate.(if your not using UGfilter). I would almost go far as to say that substrate can create more harm than good, because anaerobic bacterial colonies easily take hold, especially if the substrate is more than a few inches deep. when detritus gets lodged underneath the substrate, it becomes a time bomb. if you don't syphon with extreme care, (unless you syphon very often, which is also a bad thing), you cant avoid unleashing a cloud of detritus and the toxic byproducts of anaerobic bacteria. (which only occurs in the substrate), and this often kills sensitive fish, even if your water is otherwise clean. So, this is why in any tank where the fish dont require substrate to burrow or sift through, and I dont care about aethetics, I leave it bare. Then, I add at least 2 bubbler strips, and a powerhead, and a handful of java moss, so every square inch of the tank has fresh water flowing. I believe this combination creates very high o2 levels, which of course feed greater bact. colonies, and I cannot understate the role a good thick coud of java moss plays both in good water and also in stress reduction. I am gonna syphon my tank today (the first time since I set it up 5 months ago) Oh, the other thing I do is add aquarium salt and just a pinch of ammonia pebbles whenever I top off my tank. does anyone have any thoughts or advice about this method? Since I am switching to a planted tank, I will be adding tons of substrate to form some slopes. now i'm gonna post my substrate question in the planted tank forum, i wanna now about good ways to get lots of o2 in the substrate to stimulate root growth. thanks for reading! I owe almost everything I know to this wonderful community!
-pat
 

Newman

Elite Fish
Sep 22, 2009
4,668
0
0
Northern NJ
#2
Vast dissloved amounts of O2 in your tank actually promotes algae blooms if there is enough light... i think what you meant it that you need CO2 in your tank for your plants. a good bablance between CO2, O2, light, macro, and micro nutrients is vital to a planted tank. otherwise algae will be taking over.
 

Newman

Elite Fish
Sep 22, 2009
4,668
0
0
Northern NJ
#4
Its a trend i've been seeing in other people's infected tanks, and reading about in dosing guides and such. more O2 would mean less dissolved CO2 which would be just good enough for the algae to thrive on, but not enough for the plants? just some guesses.

What im saying is that if theres an imbalance, and there is excess O2, then theres a chance of algae.

lol way to put me on the spot. maybe you could provide better information on this.
 

Feb 27, 2009
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36
#5
more O2 would mean less dissolved CO2 which would be just good enough for the algae to thrive on, but not enough for the plants? just some guesses.
More O2 does not necessarily mean less dissoloved CO2. You can be saturated in both at the same time. One does not displace the other.

lol way to put me on the spot. maybe you could provide better information on this.
I did not mean to put you on the spot. I do apologize profusely and sent you a PM message also.
 

Oct 15, 2005
3
0
0
Chicago
#7
yea, i didnt think they affected each other.....I should mention I already have a good amount of experience and success w/ planted tanks, but far from a pro...

now, let me simplify my idea. the original posting was waaay too complicated, and I just wanted some input regarding my plans to get more o2, warmth, and overall circulation to the root zones via buried airstones, heating cables, and well placed powerheads. I decided I am going to setup a 20L tank to try it out...I'm gonna set up a UG filter, install heater cable and airstone strips underneath the plates, then add an inch or so of coarse gravel,(to allow better circulation and prevent the slits from getting clogged), topped with flourite, and plant some dwarf sag and other plants. the theory is that the heat and O2 should rise up through the root zone, greatly improving root vigor. the lighting will be a dual compact 6700K CF fixture, and pressurized CO2, probably tubed into a powerhead venturi to disperse it. Does this sound OK? the reason I thought this up was becuase of the tall slope I intend on creating. I was wondering If I perhaps stuck some PVC pipes, or used some other material in order to be able to feed the heating cable/airstones/powerhead/ INTO the "mountain", about 10'' underneath the surface, so that hopefully the warmth and oxygen can reach the roots of the plants that are planted into the side of the slope...
 

Newman

Elite Fish
Sep 22, 2009
4,668
0
0
Northern NJ
#8
Go for it man, all those ideas sound right. ive actually seen videos of people setting up heated and areated systems for their plant's roots, so i figured this stuff really works. tell us how it goes.

The only problem with pvc pipes, is if they are not concealed within the gravel in the slope, they will stick out quite painfully against the glass.