I'm currently on same thoughts as you mate.
However, the top spray bar will make the tank kind of no appropriate as aquascape or Holland scape... (Imo)
I've decided to put spray bar at the bottom back glad (transparent tube - AliExpress full with nice spray bar options)
Awesome filter (850)
However, I bought it after using floval 407... (Two filters)
Both were quite compering to one Oase 850 [emoji28]
For now I am thinking go get back towards 407..
ATM waiting for my new cabinet (it will be closed from the back as well )
Once I'll check the hummin inside...
First of all good luck ))
Regarding the gravel...
It depends on "what are you wish to grow?"
The graver on the pic is similar to JBL...
Second pic is non co2 and nor ferts tank :wink:
Both mine btw (approximately 10 years ago)
Sent from my...
For more information...
1. How long the rocks are in?
2. What light are you using ?
3. How much is you kh?
I am asking in order to be sure that we are getting the most informative picture ;)
You can get good colors in non injected co2 tank.
No color Manipulation :wink...
It could be few reasons...
1. Filter isn't capable to Handle the wast load.
2. Biological immature tank.
3. Bacterial bloom... Topically whet you are killing you bacteria with tap water ..
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