Substrate for Malawi tank

Hi, I am going to upgrade my existing 900cm malawi tank to a 1440cm tank. They seem all to be mbuna. I have lots of rocks to go into the bigger tank but am thinking of using a new substrate. I have seen various pics on the forum showing sand and pebbles/small stones. Which is the best relating to their natural environment?
I do not want to make it a planted tank, so will probably put in fake plants for the colour.
Any ideas?
Also where in Northern Suburbs (CT) would I be able to source where it is not too expensive?

Just want to say that I really appreciate people that have helped me when I have posted previously.

This really is a great place to get tons of info

:bigsmile:

 

Hi @Rookie, sand is a good choice as these rascals like to dig especially if they start mating. Pebbles are for a nice effect and you can place large rocks in as they dig underneath them for nesting. It provides nice hide aways for them and the fry as well. Can opt for a silica substrate as well if you want to keep cost in mind. HTH!

 

Hi @wsteene, I know these buggers dig like mad. Give it a day or two and I end up with huge mounds of sand in one or two spots. Worry that they will make the rocks tumble. Luckily the new rocks are more flat so they should be easier to stack. Do you know if I can get the silica anywhere?

 

Hi all, sorry another question. My tank is a 1440 x 450 x 500 tank - what heaters should I use and how many?

 

one 300w or two 150w for even heat distribution and as a safety if one fails. Jager, sicce scuba, elite, are some of the better quality brands. Sand best for cichlids. Childrens play sand cheapest can get at toys r us or reggies. Better more expensive option is coral sand which also helps keep ph up for malawis. Sams aquarium and panorama pets and pet adventure usually have better variety and price.

 

@disco.. thanks so much

 

I used to use coral sand for my malawian tank, it buffered the water so that it was hard and alkaline

 

You can put polystyrene in the tank, then the stones on the polystyrene to prevent damage to the glass. Add your substrate after placing rocks to prevent the fishy bulldozers from trashing their home!