Saratoga jardini pond build

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well when i asked my mum for a fish tank she expected a 40l tetra tank and all i wanted was the mean predators that eat those tetras well when the predators are babies hehehehehe
 
im sad my pleco died which i believe was to a ph drop it went to 6 over night as amonia is at 0 nitrites 0 nitrates less then 1ppm which is fine but ph was at 6 when i checked so that has to be the cause since my water is great i do 35% water changes weekly so i will proberly get some peacock bass well 1 and what can i do to prevent this happeninging cause i dont want to lose any of my fish especiaaly if i got a stingray
 
There's not much difference between a 40l and a 400 gal ay turtles hahahahahaha ;)
 
yea only like 1660 litres difference give or take
 
there are two things I would do for ph drop either tiny bit of Malawi buffer but this can change it to quickly bit drastic but does work with water change , best way is to put some coral gravel in your external filter couple if spoon fulls this way it raises the ph gradually so there's no drastic changes (I do this quite often and just top it up when do filter change)

also plecs do die for strange reasons ive had quite a few unexplained deaths with plecs over the years and all diff types not just commons , royals seem to be my downfall ive had four in prob fifteen years none have made it over 6/7" :(
 
more like use it as a swimming pool
 
im sad my pleco died which i believe was to a ph drop it went to 6 over night as amonia is at 0 nitrites 0 nitrates less then 1ppm which is fine but ph was at 6 when i checked so that has to be the cause since my water is great i do 35% water changes weekly so i will proberly get some peacock bass well 1 and what can i do to prevent this happeninging cause i dont want to lose any of my fish especiaaly if i got a stingray

certain stones can be used to stabilise pH and other water parameters. By the sounds of things, you need to prevent pH crashes. If you have a small amount of limestone that can help - will also raise ph slightly. Water hardeners will work in a similar manner.

Sandstone is a good option provided it:

1. Comes from a clean source
2. Doesn't contain too much iron (avoid very deep red colours)

Sandstone is really good because good bacteria can colonise its porous structure
 
i got sand stonee int he tank and a big rock with i think might be granite or slate
 
granite and slate don't really alter params. Do you know if your sandstone contains calcite?
 
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