Is HOB bad for Planted tank
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Is HOB bad for Planted tank

This is a discussion on Is HOB bad for Planted tank within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> Hi there, I dont know if i should have put this in Planted thread or here, as it deals with Fish and Plants, or ...

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Is HOB bad for Planted tank
Old 05-04-2011, 08:50 AM   #1
 
Is HOB bad for Planted tank

Hi there, I dont know if i should have put this in Planted thread or here, as it deals with Fish and Plants, or can i put this thread in both places, but here goes nothing:

My setup would be low tech lighting (shop lights) in a 75G tank with a Eheim 2217 as primary filter, and either an eheim 2215 or preferably an Aquaclean HOB 110 (or maybe a bit smaller). I will try to do medium to heavy planted, with low light plants (max medium light), such as hornworth, anubias, java moss, vals etc... (compatible with the fish bellow), playsand substrate

Why two filters, and specially the HOB as second? Because i will have very messy fish, ie: 6 fancy (slow) Goldfish, 2 Bristlenose Plecos, and either 3 dojos or 12 white cloud minnows or 6-8 fancy guppies. I have been told in forums this is not yet overstocked, specially if i do weekly 50% water changes. I may not get this many fish, but i want to plan for it in case this is reached. I may put smaller fish in a 10g tank eventually too..

Why my concern of the HOB, aquaclear 110? Because it puts alot of bubbles in the water, thus removing alot of CO2. (this is what i have read anyways.) I will add the general liquid fertilizers (not the one that has only CO2). My fish will be more important than the plants, but still, i care for both. Right now i have a small 10g with aquaclear 20, and without fertilizer, hornworth seems to be growing very well, and so is the java moss, but not the anubias does look as it is doing too well (maybe needs fertilizer). Instead of the HOB, i may be able to get a smaller size used canister for like 70$, so this is an option as well.

Pls let me know your thoughts on the HOB as secondary filter, or if it is even necessary, for the fish load mentioned?
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Old 05-04-2011, 01:42 PM   #2
 
Anyone? Should i put this in the Plants section?
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Old 05-04-2011, 04:43 PM   #3
 
Before I put in the plants section give it a day or so for answers. I wanted to answer but I don't have decisive information.

I will say, that I've read where numerous folks who use CO2 have a bubbler that runs at night. Sure they are forcing CO2 into the water. But they add air too.

I also read about biofilm on the water surface from lack of agitation. I have a HOB that I believe is overkill and I have the biofilm from lack of agitation. I see lots of bubbles in my water from the HOB filter and see them collect at the surface too.

So to me it would depend on the HOB filter.
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Old 05-04-2011, 04:50 PM   #4
 
thanks, the second filter, the HOB for example, would be either an Aquaclear 110, or 70.
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Old 05-04-2011, 07:19 PM   #5
zof
 
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I ditched my HOB filters, the specific reason? My plants, the HOBs were creating too much current for my plants, once replaced by a air driven sponge filter, my plants took off.

I tried to reduce the flow which worked but not to the level I wanted if you want to try my method, do a search on this side for dissipating/reducing HOB flow.
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Old 05-04-2011, 08:27 PM   #6
 
Seems to me you just go with the canister and only add the HOB if you really need it.
I'm betting you won't really need it.

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Old 05-04-2011, 08:40 PM   #7
 
ok, thanks, will try to see if cannister will be enough
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Old 05-04-2011, 09:00 PM   #8
 
However, having said the above, I have an AquaClear 70 on my 60g tank set to it's lowest flow (about 100gph) and it's working great (although I also have a little Aqua-Tech 5-15 cartridge filter on the other side).
Instead of a canister, I'm thinking of adding another AC70 set to low flow to have the combined bio capacity of a canister, but have everything up top.
They will both use sponge and Seachem Matrix. Both set at low flow for a combined 200gph (although one or both could be boosted up as/if required) makes for less disturbance and the redundancy will allow me to stagger cleaning.

Last edited by AbbeysDad; 05-04-2011 at 09:08 PM..
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Old 05-04-2011, 09:11 PM   #9
 
hmmm, seachem matrix, i dont have that!!! going to look it up for my new tank.
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Old 05-04-2011, 09:31 PM   #10
 
after seeing Zof post about current, that might be a consideration what filter you run more then dissipation. I do wonder about the current my aguaclear 50 on low makes in my 29G tank. Sometimes I think it's too much for the plants, but everything in the path grows just fine so far including the crypts which I'm told will tell you when they are unhappy by melting.

I'm going to look into a canister, only because I will eventually get a 75 gallon and will want a canister for that.
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